Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a chilly 44.4°F (6.9°C) to a wintry 33.4°F (0.8°C). In Westmoreland, an average temperature of 22.8°F (-5.1°C) is noted during December nights.Humidity
The average relative humidity in December is 82%.Rainfall
In Westmoreland, during December, the rain falls for 7.7 days and regularly aggregates up to 0.87" (22mm) of precipitation. Throughout the year, there are 125.1 rainfall days, and 11.69" (297mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Westmoreland, during December, snow falls for 7.4 days and regularly aggregates up to 1.61" (41mm) of snow. 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, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:25 pm EST.
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 value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December in Westmoreland?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Westmoreland?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December in Westmoreland?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Westmoreland, 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).
Average pressure in December
Westmoreland, 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).
Average wind speed in December
Westmoreland, 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).
Average humidity in December
Westmoreland, 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%).
Average rainfall in December
Westmoreland, 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").
Average rainfall days in December
Westmoreland, 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).
Average snowfall in December
Westmoreland, 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").
Average snowfall days in December
Westmoreland, 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).
Average daylight in December /
Average sunshine in December
Westmoreland, 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).
Average sunshine days in December
Westmoreland, 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).
Average UV index in December
Westmoreland, 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).
Average cloud cover in December
Westmoreland, 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).
Average visibility in December
Westmoreland, 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).
Westmoreland, New Hampshire, USA
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