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
A subtle decrease in the average high-temperature marks December, falling from November's cool 52.7°F (11.5°C) to a cold 41.5°F (5.3°C). Jamestown's nights in December experience an average temperature drop to a subzero cold 28.4°F (-2°C).Humidity
In Jamestown, the average relative humidity in December is 76%.Rainfall
In Jamestown, in December, during 4.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Jamestown, during the entire year, the rain falls for 95.5 days and collects up to 8.62" (219mm) of precipitation.Snowfall
January through March, October through December are months with snowfall. In Jamestown, in December, snow falls for 3.3 days, with typically accumulated 0.31" (8mm) of snow. Throughout the year, in Jamestown, there are 17 snowfall days, and 1.93" (49mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Jamestown.On the first day of the month, sunrise is at 7:09 am and sunset at 4:48 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:58 pm CST.
Sunshine
In Jamestown, the average sunshine in December is 5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the UV index of 2 transforms into the following advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Jamestown?
What is the average humidity in December in Jamestown?
How many days does it rain in December in Jamestown?
How much does it snow in Jamestown in December?
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?
When is the lowest UV index in Jamestown?
What is the UV index reading in December in Jamestown?
Average temperature in December
Jamestown, MO
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in December
Jamestown, MO
- 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 (29.91"Hg).
Average wind speed in December
Jamestown, MO
- Average wind speed in December: 9mph
The windiest months (with the highest average wind speed) are January and March (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in December
Jamestown, MO
- Average humidity in December: 76%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Jamestown, MO
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is May (1.3").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days in December
Jamestown, MO
- Average rainfall days in December: 4.5 days
The months with the highest number of rainy days are April and May (11.3 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in December
Jamestown, MO
- Average snowfall in December: 0.31"
The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in December
Jamestown, MO
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jamestown, MO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).
Average sunshine days in December
Jamestown, MO
- Average sunshine days in December: 23.7 days
The month with the most sunshine days is December (23.7 days).
The month with the least sunshine days is May (15.6 days).
Average UV index in December
Jamestown, MO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Jamestown, MO
- Average cloud cover in December: 47
The months with the most cloud cover are January, February and March (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in December
Jamestown, MO
- 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).
Jamestown, Missouri, USA
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