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
Mountain in December demonstrates a small temperature transition, adjusting from an average high of an icy 39.6°F (4.2°C) in November to a subzero cold 27.3°F (-2.6°C). In December, Mountain's nights cool slightly to a consistent average temperature of 18.5°F (-7.5°C).Humidity
In December, the average relative humidity is 85%.Rainfall
In Mountain, during December, the rain falls for 5.3 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, in Mountain, Wisconsin, there are 122.9 rainfall days, and 21.34" (542mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 11.8 days and typically aggregates up to 6.06" (154mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Mountain.On the first day of December, sunrise is at 7:13 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:21 pm CST.
Sunshine
In December, the average sunshine is 3.7h.UV index
In Mountain, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
How cold is December in Mountain?
What is the average humidity in December in Mountain?
How many days does it rain in December in Mountain?
When does it snow the most in Mountain?
How many days does it snow in December in Mountain?
What is the month with the shortest days in Mountain?
How many hours of daylight does Mountain have in December?
When are sunrise and sunset in December in Mountain?
How long on average sun shines in December in Mountain?
What is the UV index reading in December in Mountain?
Average temperature in December
Mountain, WI
- Average high temperature in December: 27.3°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in December: 18.5°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Mountain, WI
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Mountain, WI
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is April (8.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Mountain, WI
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (73%).
Average rainfall in December
Mountain, WI
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is June (2.6").
The driest months (with the least rainfall) are January and February (0.87").
Average rainfall days in December
Mountain, WI
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in December
Mountain, WI
- Average snowfall in December: 6.06"
The month with the highest snowfall is December (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Mountain, WI
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mountain, WI
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in December
Mountain, WI
- Average sunshine days in December: 16.9 days
The months with the most sunshine days are September and December (16.9 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in December
Mountain, WI
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, March and November (UV index 1).
Average cloud cover in December
Mountain, WI
- Average cloud cover in December: 61
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Mountain, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).
Mountain, Wisconsin, USA
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