December weather forecastWilliamsburg, MO
December
Weather in December
December, the first month of the winter in Williamsburg, is still a cold month, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 28.6°F (-1.9°C).Temperature
The shift from November to December involves a decrease in the average high-temperature, from a cool 52.9°F (11.6°C) to an icy 41.5°F (5.3°C). In December, the temperature in Williamsburg drops to an average of 28.6°F (-1.9°C) at night.Humidity
In Williamsburg, Missouri, the average relative humidity in December is 77%.Rainfall
In Williamsburg, Missouri, in December, it is raining for 6.9 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, there are 139.9 rainfall days, and 28.19" (716mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In December, in Williamsburg, it is snowing for 3.4 days. Throughout December, 1.38" (35mm) of snow is accumulated. Throughout the year, in Williamsburg, Missouri, there are 17.9 snowfall days, and 8.78" (223mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 4:45 pm. On the last day of December, in Williamsburg, sunrise is at 7:25 am and sunset at 4:54 pm CST.
Sunshine
In Williamsburg, Missouri, the average sunshine in December is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Williamsburg. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Williamsburg, MO
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in December
Williamsburg, 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
Williamsburg, MO
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in December
Williamsburg, MO
- Average humidity in December: 77%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Williamsburg, MO
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in December
Williamsburg, MO
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6 days).
Average snowfall in December
Williamsburg, MO
- Average snowfall in December: 1.38"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Williamsburg, MO
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is January (5.6 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
Williamsburg, MO
- Average daylight in December: 9h and 30min
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 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 36min).
Average sunshine days in December
Williamsburg, MO
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Williamsburg, 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
Williamsburg, MO
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in December
Williamsburg, 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).
