December weather forecast and climate
Jamestown, ND

Weather in December

December, the first month of the winter, in Jamestown, is still a freezing cold month, with average temperature fluctuating between 10.2°F (-12.1°C) and 21.2°F (-6°C).

Temperature

In December, the average high-temperature significantly decreases, from a wintry 37.4°F (3°C) in November, to a subzero cold 21.2°F (-6°C). In Jamestown, in December, the average low-temperature is 10.2°F (-12.1°C).

Humidity

In Jamestown, the average relative humidity is 88%.

Rainfall

In December, the rain falls for 2.3 days. Throughout December, 0.87" (22mm) of precipitation is accumulated. In Jamestown, during the entire year, the rain falls for 96.6 days and collects up to 16.77" (426mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall in Jamestown is December when snow falls for 13.3 days and typically aggregates up to 4.69" (119mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8.6h of daylight.

Sunshine

The average sunshine in December is 3.7h.

UV index

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Jamestown?

In Jamestown, North Dakota, in December, the average high-temperature is 21.2°F (-6°C), and the average low-temperature is 10.2°F (-12.1°C).

What is the average humidity in December in Jamestown?

The average relative humidity in December in Jamestown, North Dakota, is 88%.

How many days does it rain in December in Jamestown?

In December, in Jamestown, the rain falls for 2.3 days. Throughout December, 0.87" (22mm) of precipitation is accumulated.

How many days does it snow in December in Jamestown?

In Jamestown, in December, snow falls for 13.3 days, with typically accumulated 4.69" (119mm) of snow.

When does it snow the most in Jamestown?

The month with the most snowfall in Jamestown is December when snow falls for 13.3 days and typically aggregates up to 4.69" (119mm) of snow.

What is the month with the shortest days in Jamestown?

The month with the shortest days in Jamestown is December, with an average of 8.6h of daylight.

How many hours of daylight does Jamestown have in December?

The average length of the day in December in Jamestown is 8.6h.

How many hours of sunshine does Jamestown have in December?

In Jamestown, the average sunshine in December is 3.7h.

How high is the UV index in December in Jamestown?

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

Average temperature in December
Jamestown, ND

Average temperature in December - Jamestown, ND
  • Average high temperature in December: 21.2°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (17.8°F).

  • Average low temperature in December: 10.2°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (3.6°F).

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Average pressure in December
Jamestown, ND

Average pressure in December - Jamestown, ND
  • Average pressure in December: 30.13"

The month with the highest atmospheric pressure is February (30.18").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in December
Jamestown, ND

Average wind speed in December - Jamestown, ND
  • Average wind speed in December: 10.5mph

The windiest month (with the highest average wind speed) is October (11.2mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

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Average humidity in December
Jamestown, ND

Average humidity in December - Jamestown, ND
  • Average humidity in December: 88%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (59%).

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Average rainfall in December
Jamestown, ND

Average rainfall in December - Jamestown, ND
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is June (2.95").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in December
Jamestown, ND

Average rainfall days in December - Jamestown, ND
  • Average rainfall days in December: 2.3 days

The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is February (1.6 days).

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Average snowfall in December
Jamestown, ND

Average snowfall in December - Jamestown, ND
  • Average snowfall in December: 4.69"

The month with the highest snowfall is December (4.69").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Jamestown, ND

Average snowfall days in December - Jamestown, ND
  • Average snowfall days in December: 13.3 days

The month with the highest number of snowfall days is December (13.3 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
Jamestown, ND

Average daylight in December / Average sunshine in December - Jamestown, ND
  • Average daylight in December: 8.6h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in December: 3.7h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is January (Average sunshine: 3.6h).

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Average sunshine days in December
Jamestown, ND

Average sunshine days in December - Jamestown, ND
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is June (12 days).

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Average UV index in December
Jamestown, ND

Average UV index in December - Jamestown, ND
  • Average UV index in December: 2

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February and November (UV index 1).

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Average cloud cover in December
Jamestown, ND

Average cloud cover in December - Jamestown, ND
  • Average cloud cover in December: 60

The month with the most cloud cover is February (Cloud cover 63).
Months with the least cloud cover are July and August (Cloud cover 24).

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Average visibility in December
Jamestown, ND

Average visibility in December - Jamestown, ND
  • Average visibility in December: 6mi

Months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February and March (5mi).

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