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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, like December, is another subzero cold winter month in Jefferson, New Hampshire, with an average temperature fluctuating between 9.1°F (-12.7°C) and 22.5°F (-5.3°C). The coldest month is January, with an average high-temperature of 22.5°F (-5.3°C) and an average low-temperature of 9.1°F (-12.7°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Jefferson, New Hampshire, with an average temperature fluctuating between 25°F (-3.9°C) and 10.4°F (-12°C). The arrival of February brings an average high-temperature of a still freezing cold 25°F (-3.9°C), closely following the temperature pattern of January. Weather in February »
Weather in March
March, the first month of the spring in Jefferson, is a wintry month, with an average temperature ranging between max 33.1°F (0.6°C) and min 18.3°F (-7.6°C). Jefferson observes a slight uplift in the average high-temperature with the onset of March, adjusting from February's subzero cold 25°F (-3.9°C) to a wintry 33.1°F (0.6°C). Weather in March »
Weather in April
April in Jefferson, New Hampshire, is a frosty spring month, with an average temperature fluctuating between 46°F (7.8°C) and 29.7°F (-1.3°C). The shift from March to April brings an increase in the average high-temperature, moving from an icy 33.1°F (0.6°C) to a frosty 46°F (7.8°C). Weather in April »
Weather in May
May, the last month of the spring in Jefferson, is an enjoyable month, with temperature in the range of an average high of 61.7°F (16.5°C) and an average low of 41.4°F (5.2°C). Witnessing a clear rise in May, the average high-temperature escalates from April's frosty 46°F (7.8°C) to an enjoyable 61.7°F (16.5°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Jefferson, New Hampshire, with an average temperature ranging between min 48.2°F (9°C) and max 68.5°F (20.3°C). June's onset brings a minor rise in the average high-temperature, moving from an enjoyable 61.7°F (16.5°C) in May to an agreeable 68.5°F (20.3°C). Weather in June »
Weather in July
July in Jefferson, New Hampshire, is a warm summer month, with an average temperature varying between 74.8°F (23.8°C) and 53.8°F (12.1°C). Jefferson's temperatures tend to reach their peak averages in July, with a high of 74.8°F (23.8°C) and a low of 53.8°F (12.1°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Jefferson, New Hampshire, with an average temperature varying between 52°F (11.1°C) and 73.4°F (23°C). Jefferson records a slight change with August's average high-temperatures adjusting to a still moderately hot 73.4°F (23°C) from July's 74.8°F (23.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Jefferson, is also an enjoyable month, with an average temperature fluctuating between 65.8°F (18.8°C) and 46.2°F (7.9°C). A modest decline in the average high-temperature is seen during September, decreasing from a warm 73.4°F (23°C) in August to a comfortable 65.8°F (18.8°C). Weather in September »
Weather in October
October, like September, in Jefferson, New Hampshire, is another fresh autumn month, with temperature in the range of an average high of 52.2°F (11.2°C) and an average low of 38.1°F (3.4°C). Jefferson, New Hampshire, experiences a temperature shift at the start of October, with average high-temperatures adjusting from an enjoyable 65.8°F (18.8°C) in September to a fresh 52.2°F (11.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Jefferson, is also a wintry month, with an average temperature ranging between min 27.3°F (-2.6°C) and max 38.8°F (3.8°C). Jefferson's November weather comes with a decrease in average high-temperatures, moving from a fresh 52.2°F (11.2°C) in October to a wintry 38.8°F (3.8°C). Weather in November »
Weather in December
December, the first month of the winter in Jefferson, is also a subzero cold month, with an average temperature fluctuating between 28°F (-2.2°C) and 17.6°F (-8°C). A shift in Jefferson's weather is observed as November turns into December, with the average high temperature reducing from a wintry 38.8°F (3.8°C) to a subzero cold 28°F (-2.2°C). Weather in December »
Updated: Aug 11, 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 time of the year is the coldest?
January, recording an average high temperature of 22.5°F (-5.3°C) and a low temperature of 9.1°F (-12.7°C), is Jefferson's coldest month.
What is the most humid month?
January and February, with an average relative humidity of 89%, are most humid months.
How much does it rain?
Throughout the year, there are 159.6 rainfall days, and 31.97" (812mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
How much does it snow in Jefferson?
In Jefferson, during the entire year, snow falls for 109.1 days and aggregates up to 71.5" (1816mm) of snow.
When is the lowest UV index?
The months with the lowest UV index in Jefferson are January, February and December, with an average maximum UV index of 1.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 20.7 days and accumulates 14.88" (378mm) of snow.
What is the month with the least sunshine?
With an average of 2.7h of sunshine, February has the least sunshine of the year.
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 rainiest month?
April is the month with the most rainfall. Rain falls for 15.2 days and accumulates 3.31" (84mm) of precipitation.
What is the least humid month?
May is the least humid month, with an average relative humidity of 77%.
When it does not snow?
June through September are months without snowfall.
When are the longest days in Jefferson?
With an average of 15h and 30min of daylight, June has the longest days of the year.
What are the months with the highest UV index in Jefferson?
The months with the highest UV index are June and July, with an average maximum UV index of 5.
What are the warmest months?
With an average high-temperature of 74.8°F (23.8°C) and an average low-temperature of 53.8°F (12.1°C), July is the warmest month.
What month has the most sunshine?
With an average of 9.5h of sunshine, August has the most sunshine of the year.
What is the driest month?
September is the month with the least rainfall. Rain falls for 13.4 days and accumulates 2.17" (55mm) of precipitation.
What is the month with the shortest days?
With an average of 8h and 54min of daylight, December has the shortest days of the year.
Average temperature
Jefferson, NH
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (22.5°F).
The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure
Jefferson, NH
- Average pressure in January:
30"Hg - Average pressure in February:
29.99"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
Jefferson, NH
- Average wind speed in January:
6.2mph - Average wind speed in February:
6.2mph - Average wind speed in March:
6.2mph - Average wind speed in April:
6.5mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.6mph - Average wind speed in September:
4.7mph - Average wind speed in October:
5.3mph - Average wind speed in November:
5.7mph - Average wind speed in December:
5.9mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity
Jefferson, NH
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (77%).
Average rainfall
Jefferson, NH
- Average rainfall in January:
2.56" - Average rainfall in February:
2.28" - Average rainfall in March:
2.36" - Average rainfall in April:
3.31" - Average rainfall in May:
2.8" - Average rainfall in June:
3.11"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.28" - Average rainfall in September:
2.17" - Average rainfall in October:
3.27" - Average rainfall in November:
2.6" - Average rainfall in December:
2.76"
The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days
Jefferson, NH
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
18.9 days
- Average rainfall days in July:
18.5 days - Average rainfall days in August:
17.3 days - Average rainfall days in September:
13.4 days - Average rainfall days in October:
16 days - Average rainfall days in November:
11.5 days - Average rainfall days in December:
9 days
The month with the highest number of rainy days is June (18.9 days).
The month with the least rainy days is January (5.7 days).
Average snowfall
Jefferson, NH
- Average snowfall in January:
14.41" - Average snowfall in February:
14.88" - Average snowfall in March:
11.02" - Average snowfall in April:
9.02" - Average snowfall in May:
1.65" - Average snowfall in June:
0"
The month with the highest snowfall is February (14.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Jefferson, NH
- Average snowfall days in January:
21.2 days - Average snowfall days in February:
20.7 days - Average snowfall days in March:
19.8 days - Average snowfall days in April:
11.1 days - Average snowfall days in May:
1.6 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:
3.9 days - Average snowfall days in November:
10.4 days - Average snowfall days in December:
20.4 days
The month with the highest number of snowfall days is January (21.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Jefferson, 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:
2h and 5min - Average sunshine in February:
2h and 4min - Average sunshine in March:
4h and 0min - Average sunshine in April:
6h and 1min - Average sunshine in May:
7h and 4min - Average sunshine in June:
8h and 1min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
9h and 3min - Average sunshine in September:
8h and 0min - Average sunshine in October:
4h and 5min - Average sunshine in November:
4h and 1min - Average sunshine in December:
3h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days
Jefferson, NH
- Average sunshine days in January:
8.9 days - Average sunshine days in February:
7 days - Average sunshine days in March:
7.2 days - Average sunshine days in April:
8.4 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
10.9 days - Average sunshine days in September:
14.1 days - Average sunshine days in October:
11.1 days - Average sunshine days in November:
11.5 days - Average sunshine days in December:
7.5 days
The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is February (7 days).
Average UV index
Jefferson, NH
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover
Jefferson, NH
The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 42).
Average visibility
Jefferson, 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).
Jefferson, New Hampshire, USA
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