December weather forecast and climate
Keene, NH

Weather in December

The first month of the winter, December, is still a cold month in Keene, New Hampshire, with average temperature varying between 33.4°F (0.8°C) and 22.8°F (-5.1°C).

Temperature

In Keene, the average high-temperature drops, from a chilly 44.4°F (6.9°C) in November, to a cold 33.4°F (0.8°C). In December, the average low-temperature is 22.8°F (-5.1°C).

Humidity

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

Rainfall

In Keene, it is raining for 7.7 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, in Keene, 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, in Keene, 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

With an average of 9.1h of daylight, December has the shortest days of the year in Keene.

Sunshine

In December, the average sunshine 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. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to the UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Keene?

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

How much does it rain in Keene in December?

In December, in Keene, New Hampshire, the rain falls for 7.7 days. Throughout December, 0.87" (22mm) of precipitation is accumulated.

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?

December has the shortest days of the year, with an average of 9.1h of daylight.

How many hours of daylight does Keene have in December?

In Keene, the average length of the day in December is 9.1h.

How many hours of sunshine does Keene have in December?

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

What are the months with the lowest UV index in Keene?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December in Keene?

In December, the average daily maximum UV index in Keene is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.

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"

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.92").

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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").
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).
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: 9.1h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in December: 4.8h

The month with the most sunshine is August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.4h).

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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).
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

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).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).

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