December weather forecast and climate
Westmoreland, NH

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

Temperature

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

Humidity

In December, the average relative humidity in Westmoreland 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, in Westmoreland, New Hampshire, 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 Westmoreland, New Hampshire. In Westmoreland, during 7.4 snowfall days, 1.61" (41mm) of snow is typically accumulated. Throughout the year, in Westmoreland, 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 Westmoreland.

Sunshine

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 Westmoreland. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Westmoreland?

In Westmoreland, in December, the average high-temperature is 33.4°F (0.8°C), and the average low-temperature is 22.8°F (-5.1°C).

What is the average humidity in December in Westmoreland?

The average relative humidity in December in Westmoreland, New Hampshire, is 82%.

How many days does it rain in December in Westmoreland?

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

How much does it snow in Westmoreland in December?

In Westmoreland, New Hampshire, during December, snow falls for 7.4 days and regularly aggregates up to 1.61" (41mm) of snow.

What is the month with the shortest days in Westmoreland?

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

How many hours of daylight does Westmoreland have in December?

In December, the average length of the day in Westmoreland, New Hampshire, is 9.1h.

How long on average sun shines in December in Westmoreland?

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

When is the lowest UV index in Westmoreland?

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

What is the UV index intensity in December in Westmoreland?

In December, the average daily maximum UV index in Westmoreland is 2. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays.
Average temperature in December - Westmoreland, NH
  • Average high temperature in December: 0.8°C

The warmest month (with the highest average high temperature) is July (26.6°C).
The month with the lowest average high temperature is January (-2.3°C).

  • Average low temperature in December: -5.1°C

The month with the highest average low temperature is July (14.8°C).
The coldest month (with the lowest average low temperature) is January (-9.4°C).

Average pressure in December - Westmoreland, NH
  • Average pressure in December: 1017.4mbar

The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed in December - Westmoreland, NH
  • Average wind speed in December: 11.8km/h

The windiest months (with the highest average wind speed) are January, February and March (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).

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: 22mm

The wettest month (with the highest rainfall) is July (33mm).
The driest month (with the least rainfall) is March (19mm).

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: 41mm

The month with the highest snowfall is January (67mm).
Months with the least snowfall are June, July, August and September (0mm).

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).
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: 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).

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).
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

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: 8km

The month with the highest visibility is April (9km).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (8km).