December weather forecastManville, WY
December
Weather in December
The first month of the winter, December, is also a wintry month in Manville, Wyoming, with temperature in the range of an average low of 19.2°F (-7.1°C) and an average high of 33.8°F (1°C).Temperature
In Manville, December is the coldest month, with temperatures averaging a high of 33.8°F (1°C) and a low of 19.2°F (-7.1°C).Humidity
The average relative humidity in December in Manville, Wyoming, is 69%.Rainfall
In Manville, during December, the rain falls for 3.2 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, there are 84.9 rainfall days, and 9.76" (248mm) of precipitation is accumulated.Snowfall
Months with snowfall in Manville, Wyoming, are January through May, September through December. In Manville, in December, snow falls for 7.2 days, with typically accumulated 1.73" (44mm) of snow. Throughout the year, there are 43 snowfall days, and 18.27" (464mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:10 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:34 pm MST.
Sunshine
In December, the average sunshine is 6.5h.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 of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Experience reduced UV exposure by about half when donning a wide-brim hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Manville, WY
- Average high temperature in December: 33.8°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (33.8°F).
- Average low temperature in December: 19.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).
Average pressure in December
Manville, WY
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Manville, WY
- Average wind speed in December: 11mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in December
Manville, WY
- Average humidity in December: 69%
The month with the highest relative humidity is February (70%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Manville, WY
- Average rainfall in December: 0.39"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in December
Manville, WY
- Average rainfall days in December: 3.2 days
The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Manville, WY
- Average snowfall in December: 1.73"
The month with the highest snowfall is November (2.8").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Manville, WY
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Manville, WY
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 6h and 30min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).
Average sunshine days in December
Manville, WY
- Average sunshine days in December: 21.7 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is April (14.5 days).
Average UV index in December
Manville, WY
- 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
Manville, WY
- Average cloud cover in December: 31
The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in December
Manville, WY
- 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).
