Climate and monthly weather forecastSunapee, NH
Climate and monthly weather forecast
The climate of Sunapee
Sunapee, New Hampshire, USA features a prevailing humid continental climate with no dry season but a warm summer. This categorizes it within the Köppen climate classification Dfb. There is a significant disparity in temperatures from the hottest months to the coldest months of the year, alongside moderate humidity levels.Over the year, temperatures can fluctuate from a chilly 13.3°F (-10.4°C) in January to a relatively warm 78.8°F (26°C) in July. Humidity remains fairly stable throughout the year, ranging from 75% in April to 86% in January and February. Rainfall varies slightly, with a maximum of 3.39" (86mm) in October compared to a minimum of 2.05" (52mm) in September. Sunapee also experiences a generous amount of snowfall, particularly in January and February with totals of 8.62" (219mm) and 11.18" (284mm) respectively.
January witnesses most days with snowfall at 13.3, with February following closely at 14.3 days. Daylight hours increase from 9.4 hours in January to 15.4 hours in June, before reducing again towards the end of the year. Sunshine hours also follow this pattern, with a peak of 10.1 hours in August. Peak wind gusts are experienced in January and December at 12.3mph (19.8km/h) and 11.5mph (18.5km/h) respectively.
The best time to visit Sunapee
The best time to visit Sunapee largely depends on the preferred activities of the visitor. For those seeking warmth and more daylight hours, the months of June, July, and August serve as the perfect option. During these months, the temperatures range from 64.9°F (18.3°C) to 78.8°F (26°C), presenting an excellent time frame for outdoor activities. Additionally, daylight hours peak at 15.4 hours in June allowing ample time for exploration. August witnesses a maximum of 10.1 sunshine hours, making these summer months ideal for a Sunapee visit.The worst time to visit Sunapee
If uncomfortable with snowy conditions and low temperatures, the months of December, January, and February might not be the best time for a visit. During this period, the city gets enveloped by snowfall, with totals of 7.32" (186mm) in December and 8.62" (219mm) in January. Temperatures also experience a dip, ranging between 13.3°F (-10.4°C) to 31.6°F (-0.2°C), and wind gusts peak to 11.5mph (18.5km/h) in December. These conditions may not be suitable for those unaccustomed to harsh winter weather.Spring weather in Sunapee
In Sunapee, the spring season falls within the months of March, April, and May. These months witness an increase in temperature from a mild 37°F (2.8°C) in March to a warmer 64.9°F (18.3°C) in May. The period sees a gradual reduction in snowfall, finally ceasing in May. Additionally, sunshine hours rise steadily from 5.2 hours in March to 8.2 hours in May. March enjoys the most rainfall during this season with 2.72" (69mm).Summer weather in Sunapee
Summer in Sunapee features warm temperatures, ample daylight hours and plenty of sunshine. Stretching from June through August, temperatures during these sunny months fluctuate between 72°F (22.2°C) to 78.8°F (26°C). Rainfall during summer months varies from 2.68" (68mm) in June to a slightly lesser 2.09" (53mm) in August. Overall, summer provides favorable weather conditions for all sorts of outdoor activities.Autumn weather in Sunapee
September, October, and November mark the arrival of autumn in Sunapee. These months observe a gradual cooling in temperatures, starting from 68.9°F (20.5°C) in September and sliding down to 42.6°F (5.9°C) in November. Rainfall sees a slight increase, peaking at 3.39" (86mm) in October. This season also witnesses a drop in sunshine hours, down to 5.4 hours in October.Winter weather in Sunapee
Winter in Sunapee runs from December through February. These months experience low temperatures, starting from a chilly 31.6°F (-0.2°C) in December to an even colder 13.3°F (-10.4°C) in January. Snowfall increases during this season, with February witnessing maximum snowfall at 11.18" (284mm). The early dark evenings with daylight hours going down to 9.4 hours in December coupled with the sub-zero temperatures, make winters in Sunapee truly frosty.Weather in January
January is the month where winter holds a firm grip over Sunapee, New Hampshire. The average high temperature barely reaches the freezing point at 25.9°F (-3.4°C) and the nighttime low often plunges to a chilly 13.3°F (-10.4°C). Weather in January »Weather in February
In February, Sunapee experiences a continuity of winter's icy touch with only a slight rise in temperatures. There is even more snowfall with 11.18" (284mm) falling over 14.3 days. Residents often find themselves wrapped up as the weather remains comfortably within the range of winter jackets and mittens. Weather in February »Weather in March
As March begins, glimpses of spring can be felt in Sunapee with temperatures showing a noticeable upward trend. Perhaps the most significant change in this transition to spring is the decline of snowfall to 7.09" (180mm) over the span of 12.7 days. Weather in March »Weather in April
By April, spring in Sunapee is in full swing. The most significant weather shift can be seen in the decrease of snowfall from 3.5" (89mm) at the start of the month to virtually none by the end of it. Buds on trees start to appear and locals dust off their lighter clothing items. Weather in April »Weather in May
May signifies the arrival of warmer weather in Sunapee. The temperature escalates, making the weather pleasantly warm with an average high of 64.9°F (18.3°C). As the last traces of snow melt away, green landscapes return in this period of renewal. Weather in May »Weather in June
Weather in June signifies the onset of summer in Sunapee. Days are markedly longer with increased hours of sunshine, making them perfect for outdoor activities. There is a rise in humidity, hinting at a warm, slightly muggy summer ahead. Weather in June »Weather in July
July is the warmest month in Sunapee, with temperatures peaking at an average high of 78.8°F (26°C). With no snowfall and balmy days, summer is in full swing at this point in the year. Residents and visitors enjoy the warm, sunny days and an array of outdoor activities. Weather in July »Weather in August
As August arrives in Sunapee, the summer heat continues, but with a slight decrease from July's peak. The precipitation decreases, leading to drier conditions which are characteristic of late summer. The town basks under the warmth of the Sunapee sun, inviting outdoor explorations and water activities. Weather in August »Weather in September
The weather in September marks the beginning of autumn in Sunapee. A notable drop in temperature begins, and green landscapes start showing splashes of dazzling fall colors. While the weather remains relatively warm during the day, there is an unmistakable crispness in the air. Weather in September »Weather in October
October ushers in the autumn season in full swing in Sunapee. The weather is characterized by cool temperatures and an increase in rainfall, amounting to 3.39" (86mm) for the month. The town takes on vibrant hues of red, orange, and gold as leaves change color. Weather in October »Weather in November
In November, Sunapee starts transitioning into winter once more. There is a noticeable dip in temperatures and an initial snowfall of 4.09" (104mm). The hues of autumn start to fade, preparing the town for a wintry landscape. The decrease in daylight hours gives a clear indication of the changing seasons. Weather in November »Weather in December
December marks the onset of winter in Sunapee. Freezing temperatures return and snowfall increases to 7.32" (186mm). The town takes on a festive charm as snow blankets the streets and rooftops. Despite the cold weather, December carries a jovial mood with holiday decorations and a spirit of celebration. Weather in December »Updated: Jul 1, 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
January stands out as Sunapee's coldest month, with temperatures ranging between an average high of 25.9°F (-3.4°C) and a low of 13.3°F (-10.4°C).
January and February, with an average relative humidity of 86%, are most humid months.
In Sunapee, during the entire year, the rain falls for 153.2 days and collects up to 29.92" (760mm) of precipitation.
January through May, October through December are months with snowfall.
In Sunapee, during the entire year, snow falls for 65.4 days and aggregates up to 42.72" (1085mm) of snow.
The month with the most snowfall is February, when snow falls for 14.3 days and typically aggregates up to 11.18" (284mm) of snow.
The month with the least sunshine is February, with an average of 4h of sunshine.
The months with the lowest UV index are February and December, with an average maximum UV index of 1.
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 75%.
May through August, with an average maximum UV index of 5, are months with the highest UV index.
June through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 24min of daylight.
Temperature records mark July as the warmest month, with highs averaging 78.8°F (26°C) and lows at 57.2°F (14°C).
The month with the most sunshine is August, with an average of 10.1h of sunshine.
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 2.05" (52mm) of precipitation.
The month with the most rainfall is October, when the rain falls for 14 days and typically aggregates up to 3.39" (86mm) of precipitation.
With an average of 9h and 0min of daylight, December has the shortest days of the year.
Average temperature
Sunapee, 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 (25.9°F).
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Sunapee, NH
- Average pressure in January:
30.02"Hg - Average pressure in February:
30"Hg - Average pressure in March:
30.04"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:
30.04"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
Sunapee, NH
- Average wind speed in January:
7.6mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.6mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5mph - Average wind speed in September:
5.2mph - Average wind speed in October:
6.3mph - Average wind speed in November:
6.7mph - Average wind speed in December:
7.2mph
The windiest months (with the highest average wind speed) are January, February, March and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity
Sunapee, NH
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Sunapee, NH
- Average rainfall in January:
2.2" - Average rainfall in February:
2.24" - Average rainfall in March:
2.17" - Average rainfall in April:
2.72" - Average rainfall in May:
2.4" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.52" - Average rainfall in August:
2.09" - Average rainfall in September:
2.05" - Average rainfall in October:
3.39" - Average rainfall in November:
2.56" - Average rainfall in December:
2.91"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days
Sunapee, NH
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
16 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
14 days - Average rainfall days in November:
11.1 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (7.9 days).
Average snowfall
Sunapee, NH
- Average snowfall in January:
8.62" - Average snowfall in February:
11.18" - Average snowfall in March:
7.09" - Average snowfall in April:
3.5" - Average snowfall in May:
0.47" - Average snowfall in June:
0"
The month with the highest snowfall is February (11.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sunapee, NH
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
14.3 days - Average snowfall days in March:
12.7 days - Average snowfall days in April:
5 days - Average snowfall days in May:
0.6 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:
1.3 days - Average snowfall days in November:
6.2 days - Average snowfall days in December:
12 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sunapee, 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 24min
- 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 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
4h and 0min - Average sunshine in March:
5h and 12min - Average sunshine in April:
7h and 24min - 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 6min - Average sunshine in September:
8h and 12min - Average sunshine in October:
5h and 24min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days
Sunapee, NH
- Average sunshine days in January:
13.8 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
11.8 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
12 days
- Average sunshine days in July:
13.9 days - Average sunshine days in August:
13.7 days - Average sunshine days in September:
16.8 days - Average sunshine days in October:
13.5 days - Average sunshine days in November:
15.3 days - Average sunshine days in December:
13.4 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is February (11.3 days).
Average UV index
Sunapee, NH
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover
Sunapee, NH
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility
Sunapee, NH
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
