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Contents
- The climate of Mount Washington
- The best time to visit Mount Washington
- The worst time to visit Mount Washington
- Spring weather in Mount Washington
- Summer weather in Mount Washington
- Autumn weather in Mount Washington
- Winter weather in Mount Washington
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
The climate of Mount Washington
The geographical location and general climate conditions of Mount Washington, New Hampshire, United States place it within the Humid Continental classification of the Köppen climate system. The identified category, known as Dfb, is associated with a lack of dry season and a warm summer. Temperature ranges through the year display significant seasonal differences. Average temperatures oscillate between 8.4°F (-13.1°C) in the coldest month to 75°F (23.9°C) in the warmest month. Accompanying these average temperatures are the changing humidity levels, starting from 77% reaching up to 90% through the course of the year.
The monthly moisture contribution in Mount Washington showcases a varied pattern, with rainfall volumes ranging from a low point of 0.94" (24mm) to a maximum of 2.44" (62mm). The occurrence of rainfall spreads unevenly across the month with a recorded low of 8.5 days to a high peak at 16.7 days of rainfall. The cloudy skies are a common sight in Mount Washington with cloud coverage of 62% during the most clouded months.
Snowfall is a vital aspect of Mount Washington's environmental equation. The white blanket covers the Mount throughout the year with an intensity ranging from zero inches during the warmest months to a high of 11.42" (290mm) in the peak of winter. An array of Sun rays is scarce during the year with a sunlight duration varying from a minimum of 3.5 hours to a maximum of 9.8 hours. Clearer days with sunshine stretch between 7.8 to 16.2 days in a month.
The monthly moisture contribution in Mount Washington showcases a varied pattern, with rainfall volumes ranging from a low point of 0.94" (24mm) to a maximum of 2.44" (62mm). The occurrence of rainfall spreads unevenly across the month with a recorded low of 8.5 days to a high peak at 16.7 days of rainfall. The cloudy skies are a common sight in Mount Washington with cloud coverage of 62% during the most clouded months.
Snowfall is a vital aspect of Mount Washington's environmental equation. The white blanket covers the Mount throughout the year with an intensity ranging from zero inches during the warmest months to a high of 11.42" (290mm) in the peak of winter. An array of Sun rays is scarce during the year with a sunlight duration varying from a minimum of 3.5 hours to a maximum of 9.8 hours. Clearer days with sunshine stretch between 7.8 to 16.2 days in a month.
The best time to visit Mount Washington
Mount Washington graces the visitors' sights with beautiful landscapes and favorable weather conditions primarily during the summer months from June to September. During these months, the temperatures sway from 60.8°F (16°C) to 75°F (23.9°C) offering comfortable living conditions. The lesser rainfall, ranging between 1.42" (36mm) to 2.17" (55mm) and reduced snowfall down to zero inches, clear the path for outdoor activities. Longer daylight time typically between 14 to 15.5 hours and increased hours of sunshine up to 8.5 hours to 9.8 hours per day provide ample opportunity for sightseeing and exploration.
The worst time to visit Mount Washington
The harsh winter weather in Mount Washington, especially from November to March, can be challenging for visitors. The average temperatures dip from 26.8°F (-2.9°C) to 8.4°F (-13.1°C), making it quite chilly. Snowfall during these months is at its peak, reaching volumes between 8.19" (208mm) to 11.42" (290mm). The days are shorter with daylight only between 8.9 hours to 12 hours, and the sunlight hours are at their lowest ranging from 3.5 hours to 4.8 hours per day.
Spring weather in Mount Washington
The rejuvenating spring season in Mount Washington experiences a slow warming trend, starting from a cooler 32.5°F (0.3°C) in March to 60.8°F (16°C) in May. There is a noticeable increase in precipitation with rainfall volumes glaring from 1.42" (36mm) to 1.85" (47mm). Snowfall tends to recede from 8.19" (208mm) in March to zero in May. The length of the daylight starts to stretch from 12 hours in March to 14.8 hours in May, allowing more hours of sunshine, varying from 4.8 hours to 7.9 hours a day.
Summer weather in Mount Washington
The summer in Mount Washington exhibits warmer temperatures stretching between 68.2°F (20.1°C) to 75°F (23.9°C). Rainfall during these months stays somewhat consistent ranging from 1.34" (34mm) to 2.17" (55mm). The snowfall completely disperses, marking zero inches throughout the summer. The sun generously enriches the days, with daylight hours between 14.8 to 15.5 hours and sunshine hours ranging from 8.5 to 9.8 hours per day.
Autumn weather in Mount Washington
Autumn in Mount Washington brings a gradual decline in temperatures, from a comfortable 66°F (18.9°C) in September down to a crisp 37.8°F (3.2°C) come November. Rainfall increases to a maximum of 2.28" (58mm) in the autumn months. The snowfall marks its presence by November with 9.09" (231mm) recorded. The length of daylight contracts from 12.5 hours in September to 9.6 hours in November with a corresponding decrease in the sunshine hours from 8.3 to 4.6 per day.
Winter weather in Mount Washington
The winter season in Mount Washington consists of cold temperatures ranging from 26.8°F (-2.9°C) in December to 8.4°F (-13.1°C) by February. Snowfall during these winter months is impressive, ranging from 8.94" (227mm) to 11.42" (290mm). The sharp decrease in daylight to between 8.9 hours to 9.6 hours and the limited hours of sunshine, from 3.9 to 4.6 per day, creates a typical cold, wintery landscape.
Weather in January
January is typically one of the coldest months of the year in Mount Washington, New Hampshire. The weather is characterized by its chilling temperatures and heavy snowfall, making it a peak season for winter sports enthusiasts. Weather in January »
Weather in February
The cold and snowy weather persists into February, but there is a slight increase in daylight hours and temperatures compared to January. February is also recognized for its high wind speeds, often leading to blustery and chilly conditions. Weather in February »
Weather in March
March is a transitionary weather month in Mount Washington as the harsh winter starts to wane off. The month sees a noticeable increase in temperatures and daylight hours and the snow begins to soften and melt during this period. Weather in March »
Weather in April
April marks the true arrival of Spring in Mount Washington, New Hampshire. The snow has mostly melted away by this time, leading to the reappearance of greenery across the city. April is characterized by longer daylight hours and the chance of spotting wildlife begins to increase during the spring season. Weather in April »
Weather in May
May brings warmer temperatures and plentiful daylight to Mount Washington, setting the stage for outdoor activities to flourish. Rain is more frequent during May, nurturing the city's numerous gardens and parks into full bloom. With visibly long sunlight hours, May offers ample time to explore outdoor activities in the city. Weather in May »
Weather in June
June in Mount Washington witnesses the arrival of summer with clear skies and warm temperatures. The highest temperature rises to an inviting 68.2°F (20.1°C), offering ideal weather for outdoor recreation. June also boasts the longest daylight hours for the entire year. Weather in June »
Weather in July
July is the warmest month of the year in Mount Washington showing a marked increase in temperatures. Basking in a high temperature of 75°F (23.9°C), July reflects the heart of the summer season. This relatively hot month combined with the high relative humidity makes July the perfect time for beach visits and water-related activities. Weather in July »
Weather in August
August continues to serve the mood of summer in Mount Washington, though it is slightly cooler than July. The reduced temperatures combined with high humidity, can create a muggy atmosphere during August. Still, the warm and pleasing weather sets the perfect stage for late-summer activities and events. Weather in August »
Weather in September
September marks the transition from summer to autumn in Mount Washington. September enjoys warm temperatures despite shorter daylight hours, making it a lovely time to embrace the outdoors. The highest recorded temperature in September drops to 66°F (18.9°C), and it offers minim rainfall of 0.94" (24mm). Weather in September »
Weather in October
October brings the staggering richness of autumn colors to Mount Washington. Lower temperatures and shorter daylight hours characterize this month, yet this doesn't detract from the opportunities for leaf peeping and pumpkin picking that only October can offer. Weather in October »
Weather in November
November, with its crisp air and the first signs of winter, imparts a unique charm to Mount Washington. This month witnesses a dramatic drop in temperature and a considerable increase in snowfall compared to October. Cloudy skies and higher wind speeds often accompany the transition to colder weather. Weather in November »
Weather in December
December brings freezing temperatures and winter spirit to Mount Washington, making it a picturesque winter paradise. With shorter daylight hours and heavy snowfall, December is a haven for winter sports enthusiasts. Winter celebrations and eventful holiday season make December a compelling time to visit Mount Washington. Weather in December »
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
The lowest temperatures are recorded in January, with averages reaching a high of 21.7°F (-5.7°C) and a low of 8.4°F (-13.1°C).
How much does it rain?
Throughout the year, there are 144.9 rainfall days, and 20.08" (510mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 20.4 days and typically aggregates up to 11.42" (290mm) of snow.
How much does it snow?
Throughout the year, there are 116.2 snowfall days, and 68.07" (1729mm) of snow is accumulated.
What is the most humid month?
The most humid month is February, with an average relative humidity of 90%.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 3.5h of sunshine.
When is the lowest UV index?
February and December, with an average maximum UV index of 1, are months with the lowest UV index.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the wettest month?
April is the month with the most rainfall. Rain falls for 12.8 days and accumulates 2.44" (62mm) of precipitation.
What is the least humid month?
With an average relative humidity of 77%, May is the least humid month.
When it does not snow in Mount Washington?
June through September are months without snowfall.
When are the longest days?
The month with the longest days in Mount Washington is June, with an average of 15h and 30min of daylight.
When is the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 5.
What are the warmest months?
In Mount Washington, July records the average highest temperatures, peaking at 75°F (23.9°C) and reaching a low of 54.7°F (12.6°C).
What month has the most sunshine?
The month with the most sunshine is August, with an average of 9.8h of sunshine.
What is the driest month?
September is the month with the least rainfall. Rain falls for 10.6 days and accumulates 0.94" (24mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 8h and 54min of daylight.
Average temperature
Mount Washington, NH
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is January (21.7°F).
The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure
Mount Washington, NH
- Average pressure in January:
30"Hg - Average pressure in February:
29.98"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Mount Washington, NH
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.8mph - Average wind speed in March:
7.3mph - Average wind speed in April:
6.3mph - Average wind speed in May:
5.6mph - Average wind speed in June:
5mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.4mph - Average wind speed in September:
4.6mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity
Mount Washington, NH
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (77%).
Average rainfall
Mount Washington, NH
- Average rainfall in January:
1.65" - Average rainfall in February:
1.34" - Average rainfall in March:
1.42" - Average rainfall in April:
2.44" - Average rainfall in May:
1.85" - Average rainfall in June:
2.17"
- Average rainfall in July:
1.42" - Average rainfall in August:
1.34" - Average rainfall in September:
0.94" - Average rainfall in October:
2.28" - Average rainfall in November:
1.69" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is April (2.44").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days
Mount Washington, NH
- Average rainfall days in January:
8.5 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
9.9 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
16.7 days - Average rainfall days in August:
15 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
13.7 days - Average rainfall days in November:
8 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is November (8 days).
Average snowfall
Mount Washington, NH
- Average snowfall in January:
11.42" - Average snowfall in February:
9.57" - Average snowfall in March:
8.19" - Average snowfall in April:
10.79" - Average snowfall in May:
4.53" - Average snowfall in June:
0"
The month with the highest snowfall is January (11.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Mount Washington, NH
- Average snowfall days in January:
20.4 days - Average snowfall days in February:
19.8 days - Average snowfall days in March:
19.2 days - Average snowfall days in April:
13 days - Average snowfall days in May:
3.9 days - Average snowfall days in June:
0.2 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
5.9 days - Average snowfall days in November:
13.5 days - Average snowfall days in December:
20.3 days
The month with the highest number of snowfall days is January (20.4 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight / Average sunshine
Mount Washington, NH
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
3h and 3min - Average sunshine in March:
4h and 5min - Average sunshine in April:
6h and 4min - Average sunshine in May:
7h and 5min - Average sunshine in June:
8h and 3min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 2min - Average sunshine in October:
5h and 1min - Average sunshine in November:
4h and 4min - Average sunshine in December:
3h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days
Mount Washington, NH
- Average sunshine days in January:
10.3 days - Average sunshine days in February:
7.8 days - Average sunshine days in March:
9.2 days - Average sunshine days in April:
9.1 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
10.5 days - Average sunshine days in August:
12.4 days - Average sunshine days in September:
16.2 days - Average sunshine days in October:
11.4 days - Average sunshine days in November:
12.8 days - Average sunshine days in December:
9.5 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is February (7.8 days).
Average UV index
Mount Washington, NH
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover
Mount Washington, NH
The month with the most cloud cover is February (Cloud cover 64).
The months with the least cloud cover are July, August and September (Cloud cover 41).
Average visibility
Mount Washington, NH
The months with the highest visibility are May, June and July (5mi).
The months with the lowest visibility are January, February, March, April, August, September, October, November and December (4mi).