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
With December's arrival, Cottage Grove's weather changes as the average high-temperature falls from a chilly 42.8°F (6°C) in November to a freezing cold 30.4°F (-0.9°C). Cottage Grove's average low-temperature in December is measured at a still subzero cold 20.5°F (-6.4°C).Humidity
The average relative humidity in December in Cottage Grove is 84%.Rainfall
In Cottage Grove, during December, the rain falls for 5.7 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Cottage Grove, during the entire year, the rain falls for 134.9 days and collects up to 26.34" (669mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 8.9 days. Throughout December, 2.8" (71mm) of snow is accumulated. In Cottage Grove, during the entire year, snow falls for 45 days and aggregates up to 18.19" (462mm) of snow.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 7:09 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:32 pm CST.
Sunshine
In December, the average sunshine is 3.8h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 1 in December translates into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Cottage Grove?
What is the average humidity in December in Cottage Grove?
How many days does it rain in December in Cottage Grove?
How many days does it snow in December in Cottage Grove?
What is the month with the shortest days in Cottage Grove?
What is the average length of the day in December in Cottage Grove?
When is the sunrise / sunset in December in Cottage Grove?
How long on average sun shines in December in Cottage Grove?
What is the month with the lowest UV index in Cottage Grove?
How high is the UV index in December in Cottage Grove?
Average temperature in December
Cottage Grove, WI
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in December: 20.5°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Cottage Grove, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Cottage Grove, WI
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Cottage Grove, WI
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Cottage Grove, WI
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is June (3.5").
The driest months (with the least rainfall) are January and February (1.1").
Average rainfall days in December
Cottage Grove, WI
- Average rainfall days in December: 5.7 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (4 days).
Average snowfall in December
Cottage Grove, WI
- Average snowfall in December: 2.8"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cottage Grove, WI
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cottage Grove, WI
- Average daylight in December: 9h and 1min
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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Cottage Grove, WI
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in December
Cottage Grove, WI
- Average UV index in December: 1
The months with the highest UV index are May, 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
Cottage Grove, WI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Cottage Grove, WI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Cottage Grove, Wisconsin, USA
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