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
As November transitions into December, Blair sees a drop in the average high-temperature, transitioning from a cold 40.3°F (4.6°C) to a freezing cold 26.1°F (-3.3°C). Nightly temperatures in Blair drop to an average low of 15.3°F (-9.3°C) in December.Humidity
In December, the average relative humidity is 88%.Rainfall
In Blair, in December, during 5.6 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 142.8 rainfall days, and 28.78" (731mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, in Blair, it is snowing for 14.2 days. Throughout December, 6.34" (161mm) of snow is accumulated. Throughout the year, there are 68 snowfall days, and 28.11" (714mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:36 pm CST.
Sunshine
The average sunshine in December is 3.2h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 1 suggests these recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Blair have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Blair have in December?
When is the lowest UV index in Blair?
What is the UV index intensity in December?
Average temperature in December
Blair, WI
- Average high temperature in December: 26.1°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 (20.3°F).
- Average low temperature in December: 15.3°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (7°F).
Average pressure in December
Blair, WI
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Blair, WI
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
Blair, WI
- Average humidity in December: 88%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Blair, WI
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is June (4.69").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Blair, WI
- Average rainfall days in December: 5.6 days
The month with the highest number of rainy days is June (19 days).
The months with the least rainy days are January and February (3.6 days).
Average snowfall in December
Blair, WI
- Average snowfall in December: 6.34"
The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Blair, WI
- Average snowfall days in December: 14.2 days
The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Blair, WI
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Blair, WI
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in December
Blair, WI
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Blair, WI
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Blair, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, August, October and November (6mi).
The month with the lowest visibility is January (4mi).
Blair, Wisconsin, USA
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