January weather forecastMuskego, WI
January
Weather in January
Muskego, Wisconsin, sees a good share of the winter chill in January with the average temperature fluctuating between 16°F (-8.9°C) and 26.1°F (-3.3°C). This time of the year exhibits all the hallmarks of a typical winter season; grey skies, patchy fog, and the occasional snowfall. The skies remain predominantly overcast, keeping the sunshine to a mere few hours. The air pressure is high, contributing to the brisk winter conditions. The end month witnesses a slight upward trend, transitioning into a slightly more temperate month.Temperature
With its high average temperature of 26.1°F (-3.3°C) and a low of 16°F (-8.9°C), January is regarded as the coldest month.Humidity
January is the most humid month, with an average relative humidity of 85%.Rainfall
In Muskego, in January, during 3.7 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Muskego, during the entire year, the rain falls for 129 days and collects up to 20.35" (517mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 13 days and accumulates 3.23" (82mm) of snow.Daylight
In January, the average length of the day is 9h and 27min.On the first day of January, sunrise is at 7:23 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:03 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.6h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 1 during January morphs into the following directions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Muskego, WI
- Average high temperature in January: 26.1°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in January: 16°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in January
Muskego, WI
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Muskego, WI
- Average wind speed in January: 11.1mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in January
Muskego, WI
- Average humidity in January: 85%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in January
Muskego, WI
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is December (0.79").
Average rainfall days in January
Muskego, WI
- Average rainfall days in January: 3.7 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in January
Muskego, WI
- Average snowfall in January: 3.23"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Muskego, WI
- Average snowfall days in January: 13 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Muskego, WI
- Average daylight in January: 9h and 30min
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 January: 3h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in January
Muskego, WI
- Average sunshine days in January: 14.8 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in January
Muskego, WI
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Muskego, WI
- Average cloud cover in January: 63
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in January
Muskego, WI
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





