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Contents
- 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
Weather in January
January, the same as December, in Sullivan, New Hampshire, is another subzero cold winter month, with an average temperature varying between 27.9°F (-2.3°C) and 15.1°F (-9.4°C). January, with its high-temperature average of 27.9°F (-2.3°C) and a low-temperature average of 15.1°F (-9.4°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Sullivan, is another freezing cold month, with temperature in the range of an average low of 16.5°F (-8.6°C) and an average high of 31.1°F (-0.5°C). As Sullivan welcomes February, the average high-temperature records at a still freezing cold 31.1°F (-0.5°C), marking an insignificant deviation from the prior month. Weather in February »
Weather in March
The first month of the spring, March, is a cold month in Sullivan, New Hampshire, with temperature in the range of an average low of 24.3°F (-4.3°C) and an average high of 39.4°F (4.1°C). March comes with a subtle rise, with the average high-temperature adjusting from a subzero cold 31.1°F (-0.5°C) in February to a cold 39.4°F (4.1°C). Weather in March »
Weather in April
April is a cool spring month in Sullivan, New Hampshire, with an average temperature fluctuating between 52.9°F (11.6°C) and 35.1°F (1.7°C). Sullivan's weather in April shows a rise in the average high-temperature, moving up from March's icy 39.4°F (4.1°C) to a fresh 52.9°F (11.6°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Sullivan, New Hampshire, with an average temperature varying between 45.3°F (7.4°C) and 66°F (18.9°C). The shift from April to May is marked by an increase in the average high-temperature, moving from a fresh 52.9°F (11.6°C) to a refreshing 66°F (18.9°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Sullivan, New Hampshire, with an average temperature varying between 73.2°F (22.9°C) and 52.5°F (11.4°C). Sullivan observes a slight uplift in the average high-temperature with the onset of June, adjusting from May's enjoyable 66°F (18.9°C) to an agreeable 73.2°F (22.9°C). Weather in June »
Weather in July
July is a warm summer month in Sullivan, New Hampshire, with an average temperature varying between 79.9°F (26.6°C) and 58.6°F (14.8°C). Sullivan's temperature records reveal July as the warmest month, marked by average highs of 79.9°F (26.6°C) and lows of 58.6°F (14.8°C). Weather in July »
Weather in August
August, the last month of the summer in Sullivan, is also a moderately hot month, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 56.8°F (13.8°C). August's weather records an average high-temperature of a still moderately hot 78.1°F (25.6°C), showing little deviation from July. Weather in August »
Weather in September
September, the first month of the autumn in Sullivan, is still a pleasant month, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 50.9°F (10.5°C). Sullivan in September experiences a gentle temperature dip, with average high-temperatures reducing from a moderately hot 78.1°F (25.6°C) in August to a pleasant 70°F (21.1°C). Weather in September »
Weather in October
October, the same as September, in Sullivan, New Hampshire, is a moderate autumn month, with an average temperature varying between 42.1°F (5.6°C) and 56.8°F (13.8°C). The onset of October introduces a moderate change in Sullivan's weather, with average high-temperatures falling from September's pleasant 70°F (21.1°C) to a refreshing 56.8°F (13.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Sullivan, is another chilly month, with an average temperature fluctuating between 44.4°F (6.9°C) and 31.3°F (-0.4°C). The transition into November involves a decrease in the average high-temperature, falling from a mild 56.8°F (13.8°C) in October to a frosty 44.4°F (6.9°C). Weather in November »
Weather in December
December, the first month of the winter in Sullivan, is also a wintry month, with temperature in the range of an average high of 33.4°F (0.8°C) and an average low of 22.8°F (-5.1°C). Sullivan's weather changes with the onset of December, slightly falling from a chilly 44.4°F (6.9°C) in November to a wintry 33.4°F (0.8°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Sullivan?
Sullivan's January weather, marked by an average high temperature of 27.9°F (-2.3°C) and an average low temperature of 15.1°F (-9.4°C), is the coldest in the year.
How much does it rain in Sullivan?
Throughout the year, in Sullivan, New Hampshire, there are 125.1 rainfall days, and 11.69" (297mm) of precipitation is accumulated.
When does it snow in Sullivan?
January through May, October through December are months with snowfall in Sullivan, New Hampshire.
When does it snow the most in Sullivan?
January is the month with the most snowfall. Snow falls for 9.2 days and accumulates 2.64" (67mm) of snow.
How much does it snow in Sullivan?
In Sullivan, New Hampshire, during the entire year, snow falls for 39.8 days and aggregates up to 10.2" (259mm) of snow.
What are the months with the lowest UV index in Sullivan?
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Sullivan, New Hampshire.
What is the most humid month in Sullivan?
With an average relative humidity of 85%, February is the most humid month.
What is the month with the least sunshine in Sullivan?
With an average of 4.4h of sunshine, February has the least sunshine of the year.
What is the driest month in Sullivan?
The month with the least rainfall is March, when the rain falls for 10 days and typically collects 0.75" (19mm) of precipitation.
When is Daylight Saving Time (DST) in Sullivan?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sullivan, 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 least humid month in Sullivan?
The least humid month in Sullivan, New Hampshire, is April, with an average relative humidity of 74%.
When it does not snow in Sullivan?
June through September are months without snowfall in Sullivan, New Hampshire.
When are the longest days in Sullivan?
The month with the longest days is June, with an average of 15h and 18min of daylight.
What month is the hottest in Sullivan?
In Sullivan, July is the warmest month, with temperatures averaging a high of 79.9°F (26.6°C) and a low of 58.6°F (14.8°C).
What is the rainiest month in Sullivan?
July is the month with the most rainfall in Sullivan. Rain falls for 13.3 days and accumulates 1.3" (33mm) of precipitation.
What is the month with the highest UV index in Sullivan?
July is the month with the highest UV index in Sullivan, New Hampshire, with an average maximum UV index of 6.
What month has the most sunshine in Sullivan?
August has the most sunshine of the year, with an average of 10.3h of sunshine.
What is the month with the shortest days in Sullivan?
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Sullivan, NH
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.9°F).
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure
Sullivan, 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:
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:
30.08"Hg - Average pressure in December:
30.04"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Sullivan, NH
- Average wind speed in January:
7.9mph - Average wind speed in February:
7.9mph - Average wind speed in March:
7.9mph - Average wind speed in April:
7.7mph - Average wind speed in May:
6.4mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.1mph - Average wind speed in September:
5.4mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.9mph - Average wind speed in December:
7.3mph
The windiest months (with the highest average wind speed) are January, February and March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity
Sullivan, NH
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall
Sullivan, NH
- Average rainfall in January:
0.83" - Average rainfall in February:
0.79" - Average rainfall in March:
0.75" - Average rainfall in April:
0.98" - Average rainfall in May:
1.14" - Average rainfall in June:
1.18"
- Average rainfall in July:
1.3" - Average rainfall in August:
0.94" - Average rainfall in September:
0.79" - Average rainfall in October:
1.18" - Average rainfall in November:
0.94" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is March (0.75").
Average rainfall days
Sullivan, NH
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
10 days - Average rainfall days in April:
12.5 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
12 days - Average rainfall days in September:
9.3 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
7.7 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (6.3 days).
Average snowfall
Sullivan, NH
- Average snowfall in January:
2.64" - Average snowfall in February:
2.44" - Average snowfall in March:
1.42" - Average snowfall in April:
0.79" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sullivan, NH
- Average snowfall days in January:
9.2 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
8.3 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0.1 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:
0.6 days - Average snowfall days in November:
3 days - Average snowfall days in December:
7.4 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sullivan, NH
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - 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:
9h and 1min
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:
4h and 5min - Average sunshine in February:
4h and 2min - Average sunshine in March:
5h and 4min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 3min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 5min
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
Sullivan, NH
- Average sunshine days in January:
19.6 days - Average sunshine days in February:
15.6 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
15.2 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
15.2 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
17 days - Average sunshine days in November:
20.2 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (13.8 days).
Average UV index
Sullivan, NH
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
Sullivan, NH
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility
Sullivan, NH
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Sullivan, New Hampshire, USA
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