December weather forecastVan Tassell, WY
December
Weather in December
December, the first month of the winter in Van Tassell, is also a wintry month, with temperature in the range of an average low of 18.9°F (-7.3°C) and an average high of 32°F (0°C).Temperature
Van Tassell experiences its lowest average temperatures in December, reaching a peak of 32°F (0°C) and a minimum of 18.9°F (-7.3°C).Humidity
In December, the average relative humidity is 72%.Rainfall
In Van Tassell, in December, it is raining for 2.7 days, with typically 0.39" (10mm) of accumulated precipitation. In Van Tassell, during the entire year, the rain falls for 94.9 days and collects up to 10.39" (264mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Van Tassell. In Van Tassell, during December, snow falls for 6.6 days and regularly aggregates up to 1.77" (45mm) of snow. Throughout the year, in Van Tassell, there are 43.5 snowfall days, and 15.63" (397mm) of snow is accumulated.Daylight
December has the shortest days of the year in Van Tassell, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 4:23 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:32 pm MST.
Sunshine
February and December, with an average of 6.2h of sunshine, are months with the least sunshine in Van Tassell.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Van Tassell, WY
- Average high temperature in December: 32°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (32°F).
- Average low temperature in December: 18.9°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is December (18.9°F).
Average pressure in December
Van Tassell, WY
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Van Tassell, WY
- Average wind speed in December: 11.2mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity in December
Van Tassell, WY
- Average humidity in December: 72%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (44%).
Average rainfall in December
Van Tassell, WY
- Average rainfall in December: 0.39"
The wettest months (with the highest rainfall) are May and June (1.57").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in December
Van Tassell, WY
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is December (2.7 days).
Average snowfall in December
Van Tassell, WY
- Average snowfall in December: 1.77"
The month with the highest snowfall is March (2.56").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Van Tassell, WY
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is February (8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Van Tassell, 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 12min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 12min).
Average sunshine days in December
Van Tassell, WY
- Average sunshine days in December: 22.9 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Van Tassell, 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
Van Tassell, WY
- Average cloud cover in December: 33
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Van Tassell, 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).
