Climate and monthly weather forecastLoudon, NH
Climate and monthly weather forecast
The climate of Loudon
With its geographical position in the northeastern part of the USA, Loudon, New Hampshire is designated as having a Dfb, or humid continental type of climate according to the Köppen Climate Classification. This classification is characterized by no dry season and a warm summer, providing a unique set of weather conditions throughout the year.Weather parameters, ranging from temperature, humidity, rainfall, and daylight, experience varying trends on a monthly basis. Temperature exhibits a noticeable fluctuation between 14.9°F (-9.5°C) in the coldest month of January and a high of 80.2°F (26.8°C) in July. Humidity stays fairly consistent across the year, with minimal deviations from the typical range of 73% to 85%.
Rainfall in Loudon averages between 1.57" (40mm) in September to 3.15" (80mm) in October, with higher instances of precipitation during the spring and autumn months. Snowfall naturally occurs during the colder months, ranging from a significant 7.28" (185mm) in January to a negligible 0.24" (6mm) in May.
Under the Dfb climate, sunshine in Loudon varies significantly from 4.4 hours per day in February to an impressive 10.3 hours in August. The prospective visitor or resident should not be surprised by the regular shifts in daylight hours, which swing from as low as 9 hours in December to a maximum of 15.3 hours in June.
The best time to visit Loudon
With plenty of sunshine, warm temperatures, and relatively low rainfall, the ideal time to visit Loudon is during the summer months. Between June and August, visitors can expect daytime temperatures to reach an average high of 78.4°F (25.8°C) in August to a high of 80.2°F (26.8°C) in July, benefiting from a generous 15 hours of daylight in June. With the lowest rainfalls registered at 2.13" (54mm) in June and July, these months proffer optimal conditions for outdoor activities.The worst time to visit Loudon
On the other end of the spectrum, the winter months from December to February present the least favorable conditions for visiting Loudon. With temperatures plunging to lows of 15.6°F (-9.1°C) in February and highs only reaching up to 30.4°F (-0.9°C) in the same month, the cold weather is further intensified by significant snowfall measuring 7.28" (185mm) and 7.36" (187mm) in January and February respectively.Spring weather in Loudon
Spring in Loudon sparks a transition from the relentless cold to a milder climate. Between March and May, temperatures start to rise from an average low of 24.1°F (-4.4°C) to a more comfortable high of 65.7°F (18.7°C) in May. Concurrently, rainfall averages between 2.17" (55mm) in March to 2.13" (54mm) in May, indicating a relatively damp season. Sunshine hours gradually increase from 5.5 hours per day in March to 8.2 hours in May providing more opportunities for outdoor pursuits.Summer weather in Loudon
With the arrival of summer, Loudon experiences some of the best weather conditions of the year. From June to August, the average high temperature peaks at 80.2°F (26.8°C) in July with an average low of around 57.4°F (14.1°C) in August. Notably, this season records some of the longest daylight hours, specifically in June with around 15.3 hours. Despite Rains remain modest, with the highest precipitation measured at 2.32" (59mm) in June.Autumn weather in Loudon
In Autumn, Loudon presents a gradual retreat from the summer highs. Temperatures start to dip from the 70.7°F (21.5°C) high in September to the considerably cooler 44.4°F (6.9°C) in November. Rainfall becomes frequent, reaching its yearly high of 3.15" (80mm) in October. The season reports a moderate amount of sunshine with an average of 5.7 hours per day in November.Winter weather in Loudon
Winter in Loudon sees temperatures plunge to a low of 14.9°F (-9.5°C) in January while highs do not exceed 33.1°F (0.6°C) in December. Significant snowfall marks the colder months, with January receiving the highest snowfall of 7.28" (185mm). The sunshine becomes scarce with an average of 4.6 hours per day in December. However, despite the adverse weather conditions, winter could potentially attract snowfall aficionados.Weather in January
Occupying the heart of winter, January's weather in Loudon, New Hampshire can be characterized by its low temperatures, frequent snowfall, and overall chill. The highest and lowest temperatures see a tight range between 14.9°F (-9.5°C) to 27.7°F (-2.4°C). Weather in January »Weather in February
February in Loudon, New Hampshire continues the cold reign, preserving January’s low-temperature trends while introducing slight increases. The average rainfall notably increases from 1.97" (50mm) in January to 2.01" (51mm) in February. Weather in February »Weather in March
With the arrival of March in Loudon, New Hampshire, signs of winter's departure begin to be apparent. The city experiences a significant increase in average temperature, which registers a high of 38.8°F (3.8°C) and low of 24.1°F (-4.4°C), indicating the commencement of the thawing phase. Weather in March »Weather in April
April brings a noticeable shift in Loudon's weather, characterized by warmer temperatures, longer daylight hours, and blooming vegetation. In comparison to March's average temperatures, April displays a considerable increase, with a high reaching 53.1°F (11.7°C) and low plunging to 34.7°F (1.5°C). Weather in April »Weather in May
May manifests as a delightful spring month in Loudon, New Hampshire, featuring a harmonious blend of warm temperatures, generous sunshine, and lavish greenery. A notable increase in average high temperature from 53.1°F (11.7°C) in April to 65.7°F (18.7°C) in May signifies this atmospheric condition. Weather in May »Weather in June
June brings the onset of the summer season in Loudon, providing substantial sunlight and warmer temperatures. Average high temperature reaches 73.2°F (22.9°C), showcasing a substantial increase from 65.7°F (18.7°C) in May. This progression, accompanied by increased daylight hours compared to May, facilitates thriving outdoor activities. Weather in June »Weather in July
In Loudon, July resonates with the pure essence of summer with warm temperatures, abundance of sunlight, and little rainfall. The weather reaches its peak with the highest average temperature ranging from 59.4°F (15.2°C) to 80.2°F (26.8°C). Weather in July »Weather in August
August signals the gradual decline of summer in Loudon with slightly milder temperatures and shorter daylight hours. Despite a decrease in temperature from 80.2°F (26.8°C) in July to 78.4°F (25.8°C) in August, the weather remains enjoyably warm. Weather in August »Weather in September
September brings forth the advent of autumn, adding a vibrant color palette to Loudon's landscape. The transition from an August high of 78.4°F (25.8°C) to a milder 70.7°F (21.5°C) in this month is a sign of the changing seasons. Weather in September »Weather in October
October marks the full emergence of autumn in Loudon, providing a spectacular display of fall colors and cooler temperatures. Witnessing a noticeable drop from September's 70.7°F (21.5°C), temperatures in October register a high of 57.2°F (14°C) and low of 41.9°F (5.5°C). Weather in October »Weather in November
November in Loudon, New Hampshire is characterized by chilly weather, early sunsets, and minor snowfall occurrences, laying the groundwork for the winter season. The coldest autumn month, November witnesses a dip in the average high temperature to 44.4°F (6.9°C) from October's 57.2°F (14°C). Weather in November »Weather in December
In December, Loudon, New Hampshire welcomes winter with a combination of low temperatures, increased snowfall, and shorter daylight hours. Average temperatures plunge to 33.1°F (0.6°C) from November's 44.4°F (6.9°C), marking the beginning of the coldest season. Weather in December »Updated: Jun 23, 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
Loudon notes the coldest temperatures in January, with a average high of 27.7°F (-2.4°C) and a low of 14.9°F (-9.5°C).
Throughout the year, there are 138.6 rainfall days, and 27.24" (692mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
In Loudon, during the entire year, snow falls for 48.2 days and aggregates up to 30.71" (780mm) of snow.
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index.
The most humid month is February, with an average relative humidity of 85%.
The month with the most snowfall is February, when snow falls for 10.8 days and typically aggregates up to 7.36" (187mm) of snow.
With an average of 4.4h of sunshine, February has the least sunshine of the year.
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.
The least humid month is April, with an average relative humidity of 73%.
In Loudon, snow does not fall in June through September.
With an average of 15h and 18min of daylight, June has the longest days of the year.
Loudon experiences its average highest temperatures in July, reaching a peak of 80.2°F (26.8°C) and a minimum of 59.4°F (15.2°C).
July and August, with an average maximum UV index of 6, are months with the highest UV index.
With an average of 10.3h of sunshine, August has the most sunshine of the year.
September is the month with the least rainfall. Rain falls for 10.5 days and accumulates 1.57" (40mm) of precipitation.
The month with the most rainfall is October, when the rain falls for 13.9 days and typically aggregates up to 3.15" (80mm) of precipitation.
The month with the shortest days in Loudon is December, with an average of 9h and 0min of daylight.
Average temperature
Loudon, NH
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure
Loudon, NH
- Average pressure in January:
30.01"Hg - Average pressure in February:
29.99"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.03"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Loudon, NH
- Average wind speed in January:
7.5mph - Average wind speed in February:
7.3mph - Average wind speed in March:
7.1mph - Average wind speed in April:
7.1mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.7mph - Average wind speed in September:
4.9mph - Average wind speed in October:
6mph - Average wind speed in November:
6.3mph - Average wind speed in December:
7mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
Loudon, NH
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Loudon, NH
- Average rainfall in January:
1.97" - Average rainfall in February:
2.01" - Average rainfall in March:
2.17" - Average rainfall in April:
2.68" - Average rainfall in May:
2.13" - Average rainfall in June:
2.32"
- Average rainfall in July:
2.13" - Average rainfall in August:
1.85" - Average rainfall in September:
1.57" - Average rainfall in October:
3.15" - Average rainfall in November:
2.6" - Average rainfall in December:
2.68"
The wettest month (with the highest rainfall) is October (3.15").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days
Loudon, NH
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
8.1 days - Average rainfall days in March:
11.1 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
13.4 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
13.9 days - Average rainfall days in November:
9.9 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is April (15.2 days).
The month with the least rainy days is January (6.8 days).
Average snowfall
Loudon, NH
- Average snowfall in January:
7.28" - Average snowfall in February:
7.36" - Average snowfall in March:
5.12" - Average snowfall in April:
1.97" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is February (7.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Loudon, NH
- Average snowfall days in January:
11 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
10.5 days - Average snowfall days in April:
3 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 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:
0.4 days - Average snowfall days in November:
3.6 days - Average snowfall days in December:
8.7 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Loudon, NH
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 18min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
4h and 24min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 42min - Average sunshine in May:
8h and 12min - Average sunshine in June:
8h and 48min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days
Loudon, NH
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
12.5 days - Average sunshine days in April:
12.4 days - Average sunshine days in May:
14.1 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
15.8 days - Average sunshine days in August:
16.2 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
14.6 days - Average sunshine days in November:
16.7 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is April (12.4 days).
Average UV index
Loudon, NH
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
Loudon, NH
The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Loudon, NH
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
