Climate and monthly weather forecastExeter, NH
Climate and monthly weather forecast
The climate of Exeter
Geographically positioned in the northeastern United States, Exeter, New Hampshire experiences a humid continental climate, marked by the Köppen climate classification Dfb. This represents a weather pattern with no dry season and warm summers. The climate in Exeter changes dramatically from cold and snowy winters to mild and somewhat wet summers.An examination of the annual weather patterns reveals significant variations. Monthly average high temperatures fluctuate from 31.8°F (-0.1°C) in January to 78.8°F (26°C) in July, demonstrating Exeter’s wide-ranging thermal profile. Correspondingly, lows range from 20.1°F (-6.6°C) in January to 62.1°F (16.7°C) in July. Exeter’s average monthly relative humidity hovers between 73% and 79%. Rainfall varies from 0.39" (10mm) in January to 0.63" (16mm) in November, with an approximate average of seven rainy days throughout the year. Despite snowfall being recorded from November and up to April, accumulation peaks at 0.75" (19mm) in December.
Outstanding weather patterns include months with distinct rainfall activities and considerable temperature swings. November witnesses the highest rainfall at 0.63" (16mm), while September sees the least at 0.2" (5mm). Throughout the year, the climate oscillates between cold winters with mild snowfall and warm, somewhat rainy summers.
The best time to visit Exeter
Delving into the climatic conditions, it becomes obvious that the most favorable period to visit Exeter is from May to September. Temperatures during this time range from 53.1°F (11.7°C) to 78.8°F (26°C), offering pleasant and enjoyable weather for outdoor activities. Additionally, daylight hours are the longest around this time, averaging between 13.4 hours in May and 15 hours in July, providing ample time for sightseeing and exploring.The worst time to visit Exeter
The least favorable time to explore Exeter would be during the cooler months. January and February specifically see the lowest temperatures, descending to 20.1°F (-6.6°C) and 21.6°F (-5.8°C) respectively, coupled with moderate snowfall. These months also record shorter daylight hours, ranging from 9.4 hours in January to 10.6 hours in February, which could limit the opportunities for outdoor activities.Spring weather in Exeter
Spring in Exeter runs from March to May, during which the city shifts from cold to warmer weather. The high temperatures move from 40.8°F (4.9°C) in March to 63.9°F (17.7°C) in May, while lows rise from 28.4°F (-2°C) to 47.7°F (8.7°C). Pervasive rainfall is characteristic during this period, with precipitation oscillating from 0.43" (11mm) in March to 0.35" (9mm) in May.Summer weather in Exeter
Summer spans from June to August in Exeter. High temperatures prevail during this period, reaching up to 78.8°F (26°C) in July from 71.6°F (22°C) in June, and lows vary from moderate 55.6°F (13.1°C) in June to warm 62.1°F (16.7°C) in July. The amount of rainfall during this period is fairly consistent with an average of 0.47" (12mm). The city experiences the longest daylight hours of the year during summer, up to an impressive 15.3 hours in June.Autumn weather in Exeter
Autumn sets in from September to November and sees a gradual decline in temperatures. The highs drop from 70.7°F (21.5°C) in September to 47.8°F (8.8°C) in November, while the lows also reduce from 55.2°F (12.9°C) to 35.6°F (2°C). Rainfall increases gradually from 0.2" (5mm) in September to 0.63" (16mm) in November, making it the rainiest time of the year.Winter weather in Exeter
Winter temperatures in Exeter are quite low. December sees temperatures descend to a high of 37.6°F (3.1°C) and a low of 27.3°F (-2.6°C). January endures the coldest conditions, with a mere 31.8°F (-0.1°C) as a high and 20.1°F (-6.6°C) as the low. Snowfall in Exeter is a common occurrence in winter, escalating from 0.24" (6mm) in November to 0.75" (19mm) in December. Despite the cold weather, the winter season also brings the charm of a snowy landscape, attributing to Exeter’s mesmerizing beauty.Weather in January
The heart of winter settles over Exeter, New Hampshire with temperatures typically plummeting, presenting a truly wintry environment. There is relatively little precipitation this month despite a rather high average relative humidity of 78%. Weather in January »Weather in February
Winter remains entrenched in February, with temperatures slightly higher than January. Skies continue to be overcast, with a higher average cloud coverage of 49%. Maximum wind speeds are slightly less intense in February, reaching up to 10.7mph (17.2km/h) compared to 11.1mph (17.9km/h) in January. Weather in February »Weather in March
As March arrives, Exeter experiences a gradual transition from winter to spring, with temperatures beginning to climb. Despite the increasing temperatures, the weather remains largely unpredictable. Snowfall reduces significantly from 0.71" (18mm) in February to 0.59" (15mm) in March. Weather in March »Weather in April
Exeter fully embraces spring in April, and temperatures continue to rise, fostering growth and renewal. A slight drop in relative humidity from the previous month allows Exeter to enjoy a slightly drier climate. The snowfall makes its exit this month, leaving behind 0.24" (6mm) compared to March's 0.59" (15mm). Weather in April »Weather in May
May brings a significant leap in temperature, affirming the arrival of summer in Exeter. With the increasing temperatures, the appearance of the sun becomes more consistent, offering more daylight hours. Despite the higher temperatures, there is no snowfall recorded this month. Weather in May »Weather in June
The weather in June is typically characterized by a significant climb in temperatures, with the heat of the summer finally setting in. Under the clear blue skies, the streets of Exeter are enlivened with summer activities. Despite it being the peak of summer, nighttime temperatures can drop to a comfortable 55.6°F (13.1°C). Weather in June »Weather in July
July is the warmest month, wherein Exeter sees the highest temperatures of the year peaking to 78.8°F (26°C). Long, sunny days dominate, while nights are comfortably warm. Exeter experiences an increase in daylight hours, seeing a drop in cloud cover from June's 42%. Weather in July »Weather in August
August carries on the summer heat with daytime temperatures almost identical to July, the peak sitting at 78.3°F (25.7°C). Although temperatures are high, cooling breezes from the Atlantic provide some relief. This period is also marked by a considerable drop in cloud cover to 31% from July's 35%. Weather in August »Weather in September
September brings the onset of fall in Exeter, and temperatures start their descent, shuttle daily between a comfortable 55.2°F (12.9°C) and 70.7°F (21.5°C). The precipitation is the lowest in the year, with only 0.2" (5mm) of rainfall recorded. Weather in September »Weather in October
As October progresses, Exeter witnesses a substantial dip in temperatures, marking a full-fledged autumn. The city witnesses a jump in rainfall from September's 0.2" (5mm) to 0.47" (12mm) in October. This month is characterized by more clouds in the sky, with cloud cover inching up to 44%. Weather in October »Weather in November
November brings the advent of winter, with temperatures further plummeting, averaging between 35.6°F (2°C) and 47.8°F (8.8°C). The reappearance of snow from previous winter caps the transition from fall to winter. An increase in precipitation to 0.63" (16mm) signifies the beginning of a wintry wet period. Weather in November »Weather in December
December welcomes the full force of winter, as temperatures further dip and snowfall increases. With more clouds, the daylight hours are at their lowest. However, December receives the maximum precipitation of 0.75" (19mm), making it the wettest, snowiest month. Weather in December »Updated: Feb 13, 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
The lowest temperatures in Exeter, New Hampshire, are recorded in January, with averages reaching a high of 31.8°F (-0.1°C) and a low of 20.1°F (-6.6°C).
In Exeter, New Hampshire, during the entire year, the rain falls for 71.7 days and collects up to 5.28" (134mm) of precipitation.
January through April, November and December are months with snowfall.
In Exeter, during the entire year, snow falls for 18.6 days and aggregates up to 2.95" (75mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Exeter, New Hampshire.
With an average relative humidity of 79%, February is the most humid month in Exeter, New Hampshire.
February has the least sunshine of the year in Exeter, New Hampshire, with an average of 4.6h of sunshine.
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 in Exeter is April, with an average relative humidity of 73%.
In Exeter, snow does not fall in May through October.
June has the longest days of the year, with an average of 15h and 18min of daylight.
July is Exeter's warmest month, registering average high temperatures of 78.8°F (26°C) and lows of 62.1°F (16.7°C).
July and August, with an average maximum UV index of 6, are months with the highest UV index.
With an average of 10.5h of sunshine, August has the most sunshine of the year in Exeter, New Hampshire.
The month with the least rainfall is September, when the rain falls for 5.3 days and typically collects 0.2" (5mm) of precipitation.
November is the month with the most rainfall. Rain falls for 4.6 days and accumulates 0.63" (16mm) of precipitation.
The month with the most snowfall in Exeter is December, when snow falls for 2.9 days and typically aggregates up to 0.75" (19mm) of snow.
With an average of 9h and 6min of daylight, December has the shortest days of the year.
Average temperature
Exeter, NH
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (31.8°F).
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure
Exeter, 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:
29.96"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.92"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:
30.06"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 (29.92"Hg).
Average wind speed
Exeter, NH
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.6mph - Average wind speed in April:
8.8mph - Average wind speed in May:
7.4mph - Average wind speed in June:
6.7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.8mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Exeter, NH
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Exeter, NH
- Average rainfall in January:
0.39" - Average rainfall in February:
0.35" - Average rainfall in March:
0.43" - Average rainfall in April:
0.51" - Average rainfall in May:
0.35" - Average rainfall in June:
0.55"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.35" - Average rainfall in September:
0.2" - Average rainfall in October:
0.47" - Average rainfall in November:
0.63" - Average rainfall in December:
0.55"
The wettest month (with the highest rainfall) is November (0.63").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days
Exeter, NH
- Average rainfall days in January:
3.6 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
7.6 days - Average rainfall days in May:
7.1 days - Average rainfall days in June:
7.4 days
- Average rainfall days in July:
8.1 days - Average rainfall days in August:
6.4 days - Average rainfall days in September:
5.3 days - Average rainfall days in October:
6.2 days - Average rainfall days in November:
4.6 days - Average rainfall days in December:
4.3 days
The month with the highest number of rainy days is July (8.1 days).
The month with the least rainy days is February (3.3 days).
Average snowfall
Exeter, NH
The month with the highest snowfall is December (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Exeter, NH
- Average snowfall days in January:
4.9 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0 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:
0.2 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
2.9 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Exeter, NH
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 36min - 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 6min
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 6min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 30min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 12min - Average sunshine in June:
9h and 0min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 18min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Exeter, NH
- Average sunshine days in January:
23.9 days - Average sunshine days in February:
20.5 days - Average sunshine days in March:
21 days - Average sunshine days in April:
20.8 days - Average sunshine days in May:
22 days - Average sunshine days in June:
20 days
- Average sunshine days in July:
19.8 days - Average sunshine days in August:
21.3 days - Average sunshine days in September:
23.4 days - Average sunshine days in October:
22.8 days - Average sunshine days in November:
23.5 days - Average sunshine days in December:
24.5 days
The month with the most sunshine days is December (24.5 days).
The month with the least sunshine days is July (19.8 days).
Average UV index
Exeter, 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, November and December (UV index 2).
Average cloud cover
Exeter, NH
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Exeter, NH
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
