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
The beginning of December marks a decrease in the average high-temperature, transitioning from a wintry 36.7°F (2.6°C) in November to a freezing cold 24.3°F (-4.3°C). In Irma, an average temperature of 14.9°F (-9.5°C) is noted during December nights.Humidity
In December, the average relative humidity in Irma is 89%.Rainfall
In December, in Irma, the rain falls for 5.1 days. Throughout December, 1.34" (34mm) of precipitation is accumulated. In Irma, during the entire year, the rain falls for 132.2 days and collects up to 23.15" (588mm) of precipitation.Snowfall
Months with snowfall in Irma are January through May, October through December. In Irma, in December, during 20.3 snowfall days, 6.89" (175mm) of snow is typically accumulated. Throughout the year, in Irma, Wisconsin, there are 104.4 snowfall days, and 41.26" (1048mm) of snow is accumulated.Daylight
December has the shortest days of the year in Irma, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:18 am and sunset at 4:17 pm. On the last day of December, in Irma, sunrise is at 7:38 am and sunset at 4:25 pm CST.
Sunshine
In December, the average sunshine is 2.6h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 1 during December, leads to 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. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Irma in December?
What is the average humidity in December in Irma?
How many days does it rain in December in Irma?
How many days does it snow in December in Irma?
What is the month with the shortest days in Irma?
How many hours of daylight does Irma have in December?
When is the sunrise / sunset in December in Irma?
How long on average sun shines in December in Irma?
When is the lowest UV index in Irma?
How high is the UV index in December in Irma?
Average temperature in December
Irma, WI
- Average high temperature in December: 24.3°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (18.9°F).
- Average low temperature in December: 14.9°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in December
Irma, WI
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Irma, WI
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Irma, WI
- Average humidity in December: 89%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (73%).
Average rainfall in December
Irma, WI
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is June (2.95").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
Irma, WI
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Irma, WI
- Average snowfall in December: 6.89"
The month with the highest snowfall is February (8.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Irma, WI
- Average snowfall days in December: 20.3 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Irma, 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: 2h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in December
Irma, WI
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (8 days).
Average UV index in December
Irma, 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, February, March, November and December (UV index 1).
Average cloud cover in December
Irma, WI
- Average cloud cover in December: 75
The months with the most cloud cover are January and February (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Irma, WI
- Average visibility in December: 5mi
The months with the highest visibility are May and October (6mi).
The months with the lowest visibility are January and February (4mi).
Irma, Wisconsin, USA
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