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 Jamestown transitions into December, a noticeable drop in the average high-temperature is observed, falling from a wintry 37.4°F (3°C) in November to a freezing cold 21.2°F (-6°C). Throughout the month of December, Jamestown reports a steady low-temperature average of 10.2°F (-12.1°C).Humidity
In Jamestown, the average relative humidity in December is 88%.Rainfall
In Jamestown, during December, the rain falls for 2.3 days and regularly aggregates up to 0.87" (22mm) of precipitation. Throughout the year, in Jamestown, there are 96.6 rainfall days, and 16.77" (426mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 13.3 days and typically aggregates up to 4.69" (119mm) of snow.Daylight
The month with the shortest days in Jamestown is December, with an average of 8h and 36min of daylight.On the first day of December in Jamestown, sunrise is at 8:00 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 8:20 am and sunset at 4:56 pm CST.
Sunshine
The average sunshine in December in Jamestown, North Dakota, 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 health risk from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To cut down UV radiation exposure by about half, sport a wide-brim hat. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Jamestown?
What is the average humidity in December in Jamestown?
How many days does it rain in December in Jamestown?
When does it snow the most in Jamestown?
How many days does it snow in December in Jamestown?
What is the month with the shortest days in Jamestown?
What is the average length of the day in December in Jamestown?
When are sunrise and sunset in December in Jamestown?
How many hours of sunshine does Jamestown have in December?
What is the UV index reading in December in Jamestown?
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).
Average pressure in December
Jamestown, ND
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is February (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
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).
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%).
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").
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).
Average snowfall in December
Jamestown, ND
- Average snowfall in December: 4.69"
The month with the highest snowfall is December (4.69").
The months with the least snowfall are June, July, August and September (0").
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).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jamestown, ND
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
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).
Average UV index in December
Jamestown, ND
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
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).
The months with the least cloud cover are July and August (Cloud cover 24).
Average visibility in December
Jamestown, ND
- Average visibility in December: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
Jamestown, North Dakota, USA
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