December weather forecastJamestown, KS
December
Weather in December
December, the first month of the winter in Jamestown, is also an icy month, with an average temperature fluctuating between 25°F (-3.9°C) and 39.2°F (4°C).Temperature
December weather is marked by a drop in the average high-temperature, falling from a cool 52.5°F (11.4°C) in November to a cold 39.2°F (4°C). Jamestown experiences a consistent average temperature of 25°F (-3.9°C) throughout the nights in December.Humidity
In Jamestown, the average relative humidity in December is 71%.Rainfall
In Jamestown, in December, it is raining for 3.6 days, with typically 1.1" (28mm) of accumulated precipitation. In Jamestown, during the entire year, the rain falls for 106.2 days and collects up to 22.24" (565mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Jamestown, during December, snow falls for 2.6 days and regularly aggregates up to 1.06" (27mm) of snow. In Jamestown, during the entire year, snow falls for 19.9 days and aggregates up to 7.6" (193mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Jamestown.On the first day of December, sunrise is at 7:33 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:17 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.7h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Jamestown, KS
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in December
Jamestown, KS
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Jamestown, KS
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in December
Jamestown, KS
- Average humidity in December: 71%
The months with the highest relative humidity are January and May (72%).
The month with the lowest relative humidity is October (62%).
Average rainfall in December
Jamestown, KS
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in December
Jamestown, KS
- Average rainfall days in December: 3.6 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in December
Jamestown, KS
- Average snowfall in December: 1.06"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Jamestown, KS
- Average snowfall days in December: 2.6 days
The month with the highest number of snowfall days is February (5.7 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, KS
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Jamestown, KS
- Average sunshine days in December: 24.3 days
The months with the most sunshine days are November and December (24.3 days).
The month with the least sunshine days is June (14.2 days).
Average UV index in December
Jamestown, KS
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Jamestown, KS
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 23).
Average visibility in December
Jamestown, KS
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
