Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January, recording an average high temperature of 17.6°F (-8°C) and a low temperature of 5.2°F (-14.9°C), is Winter's coldest month.Humidity
January is the most humid month, with an average relative humidity of 93%.Rainfall
The month with the least rainfall is January, when the rain falls for 1.6 days and typically collects 0.63" (16mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Winter, in January, snow falls for 15.8 days, with typically accumulated 4.17" (106mm) of snow. Throughout the year, there are 74.4 snowfall days, and 33.03" (839mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 9min.On the first day of the month, sunrise is at 7:45 am and sunset at 4:29 pm. On the last day of January, sunrise is at 7:27 am and sunset at 5:07 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 2.3h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During January, 1 as the daily maximum UV index converts into the following advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How much does it snow in January?
How many hours of daylight does Winter have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Winter, WI
- Average high temperature in January: 17.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in January: 5.2°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (5.2°F).
Average pressure in January
Winter, WI
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Winter, WI
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in January
Winter, WI
- Average humidity in January: 93%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (73%).
Average rainfall in January
Winter, WI
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in January
Winter, WI
- Average rainfall days in January: 1.6 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in January
Winter, WI
- Average snowfall in January: 4.17"
The month with the highest snowfall is December (6.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Winter, WI
- Average snowfall days in January: 15.8 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Winter, WI
- Average daylight in January: 9h and 1min
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 January: 2h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in January
Winter, WI
- Average sunshine days in January: 15.8 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in January
Winter, 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, February, November and December (UV index 1).
Average cloud cover in January
Winter, WI
- Average cloud cover in January: 79
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in January
Winter, WI
- Average visibility in January: 4mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Winter, Wisconsin, USA
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