December weather forecastPowell, WI
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Powell, Wisconsin, with an average temperature fluctuating between 23.9°F (-4.5°C) and 14.5°F (-9.7°C).Temperature
December ushers in a slight temperature change, with average high-temperatures reducing from November's wintry 36.3°F (2.4°C) to a freezing cold 23.9°F (-4.5°C). December witnesses an average nighttime temperature of 14.5°F (-9.7°C).Humidity
In December, the average relative humidity is 90%.Rainfall
In Powell, in December, it is raining for 4.5 days, with typically 1.42" (36mm) of accumulated precipitation. In Powell, during the entire year, the rain falls for 128 days and collects up to 23.5" (597mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 23.4 days and typically aggregates up to 9.02" (229mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:22 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:24 pm CST.
Sunshine
In Powell, the average sunshine in December is 2.3h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Powell, WI
- Average high temperature in December: 23.9°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (18.5°F).
- Average low temperature in December: 14.5°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in December
Powell, WI
- Average pressure in December: 30.07"Hg
The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Powell, WI
- Average wind speed in December: 8.2mph
The windiest month (with the highest average wind speed) is November (8.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in December
Powell, WI
- Average humidity in December: 90%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (71%).
Average rainfall in December
Powell, WI
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Powell, WI
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is May (16.2 days).
The months with the least rainy days are January and February (2.3 days).
Average snowfall in December
Powell, WI
- Average snowfall in December: 9.02"
The month with the highest snowfall is December (9.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Powell, WI
- Average snowfall days in December: 23.4 days
The month with the highest number of snowfall days is January (24.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Powell, WI
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 2h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in December
Powell, WI
- Average sunshine days in December: 7.7 days
The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is January (6.5 days).
Average UV index in December
Powell, WI
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Powell, WI
- Average cloud cover in December: 79
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in December
Powell, WI
- Average visibility in December: 4mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
