December weather forecast
Keene, NH

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Weather in December

December in Keene seals the year with a weather pattern dominated by cold temperatures and frequent snowfall. The metamorphosis from November's weather displays a distinct downward trend in temperature, registering a high of 33.4°F (0.8°C). A heightened snowfall brings about the city's transformation into a winter wonderland, promising white Christmases. The crisp air, coupled with the festive vibe, contribute to a rich December atmosphere, replete with seasonal celebrations. December weather fills Keene with enchanting winter visuals, being the perfect backdrop for welcoming the New Year.

Temperature

The commencement of December in Keene, New Hampshire, indicates a shift in the average high-temperature, receding from November's frosty 44.4°F (6.9°C) to a cold 33.4°F (0.8°C). During December, Keene sees a mean low-temperature of 22.8°F (-5.1°C).

Humidity

In December, the average relative humidity in Keene is 82%.

Rainfall

In Keene, New Hampshire, in December, during 7.7 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, there are 125.1 rainfall days, and 11.69" (297mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Keene. In December, it is snowing for 7.4 days. Throughout December, 1.61" (41mm) of snow is accumulated. Throughout the year, there are 39.8 snowfall days, and 10.2" (259mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Keene, with an average of 9h and 6min of daylight.
On the first day of December in Keene, sunrise is at 7:01 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:24 pm EST.

Sunshine

In Keene, the average sunshine in December is 4.8h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Keene. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 2 during December translates into these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in Keene in December?

December temperatures in Keene vary between a high-temperature of 33.4°F (0.8°C) and a low-temperature of 22.8°F (-5.1°C).

What is the average humidity in December in Keene?

In Keene, New Hampshire, the average relative humidity in December is 82%.

How many days does it rain in December in Keene?

In Keene, New Hampshire, in December, it is raining for 7.7 days, with typically 0.87" (22mm) of accumulated precipitation.

How much does it snow in Keene in December?

In Keene, New Hampshire, in December, snow falls for 7.4 days, with typically accumulated 1.61" (41mm) of snow.

What is the month with the shortest days in Keene?

With an average of 9h and 6min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Keene?

The average day length in December is 9h and 5min.

What time are sunrise and sunset in December in Keene?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:15 pm. On the last day of the month, in Keene, New Hampshire, sunrise is at 7:20 am and sunset at 4:24 pm EST.

How long on average sun shines in December in Keene?

In December, the average sunshine duration in Keene, New Hampshire, is 4.8h.

What is the month with the lowest UV index in Keene?

The months with the lowest UV index in Keene, New Hampshire, are January through March, October through December, with an average maximum UV index of 2.

What is the UV index intensity in December in Keene?

The average daily maximum UV index in December in Keene is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
44.4°F 6.9°C
33.4°F 0.8°C
27.9°F -2.3°C
Average low temperature
31.3°F -0.4°C
22.8°F -5.1°C
15.1°F -9.4°C
Average pressure
30.08" 764mmHg
30.04" 763mmHg
30.02" 763mmHg
Average wind speed
6.9mph 11.1km/h
7.3mph 11.7km/h
7.9mph 12.7km/h
Average max. wind speed
7.6mph 12.2km/h
8mph 12.9km/h
8.5mph 13.7km/h
Average wind speed gusts
11.4mph 18.3km/h
12.2mph 19.6km/h
12.9mph 20.8km/h
Average humidity
77%
82%
84%
Average rainfall
0.94" 24mm
0.87" 22mm
0.83" 21mm
Average rainfall days
7.8
7.7
6.3
Average snowfall
1.02" 26mm
1.61" 41mm
2.64" 67mm
Average snowfall days
3
7.4
9.2
Average daylight
9h 4min
9h 1min
9h 2min
Average sunshine
5h 2min
4h 5min
4h 5min
Average sunshine days
20.2
18.4
19.6
Average UV index
2
2
2
Average cloud cover
42%
49%
47%
Average visibility
5mi 8km
5mi 8km
5mi 8km

Average temperature in December
Keene, NH

Average temperature in December - Keene, NH
  • Average high temperature in December: 33.4°F

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).

  • Average low temperature in December: 22.8°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).

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Average pressure in December
Keene, NH

Average pressure in December - Keene, NH
  • 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).

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Average wind speed in December
Keene, NH

Average wind speed in December - Keene, NH
  • 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).

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Average humidity in December
Keene, NH

Average humidity in December - Keene, NH
  • Average humidity in December: 82%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in December
Keene, NH

Average rainfall in December - Keene, NH
  • 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").

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Average rainfall days in December
Keene, NH

Average rainfall days in December - Keene, NH
  • 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).

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Average snowfall in December
Keene, NH

Average snowfall in December - Keene, NH
  • Average snowfall in December: 1.61"

The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Keene, NH

Average snowfall days in December - Keene, NH
  • 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).

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Average daylight in December /
Average sunshine in December
Keene, NH

Average daylight in December / Average sunshine in December - Keene, NH
  • 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 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).

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Average sunshine days in December
Keene, NH

Average sunshine days in December - Keene, NH
  • 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).

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Average UV index in December
Keene, NH

Average UV index in December - Keene, NH
  • Average UV index in December: 2

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).

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Average cloud cover in December
Keene, NH

Average cloud cover in December - Keene, NH
  • Average cloud cover in December: 49

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).

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Average visibility in December
Keene, NH

Average visibility in December - Keene, NH
  • Average visibility in December: 5mi

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).

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Keene, New Hampshire, USA

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