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 is Theresa's coldest month, registering average high temperatures of 22.6°F (-5.2°C) and lows of 10.8°F (-11.8°C).Humidity
January and February, with an average relative humidity of 89%, are the most humid months.Rainfall
In Theresa, in January, during 3.1 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Theresa, during the entire year, the rain falls for 124.2 days and collects up to 20.43" (519mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. January is the month with the most snowfall. Snow falls for 13.4 days and accumulates 3.35" (85mm) of snow.Daylight
In January, the average length of the day in Theresa is 9h and 23min.On the first day of January, sunrise is at 7:26 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:03 pm CST.
Sunshine
With an average of 3h of sunshine, January has the least sunshine of the year.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Theresa. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: In January, an average UV index of 1 transforms into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Around midday, solar radiation is most harmful; hence, exposure should be limited. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is January?
What are the most humid months?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Theresa have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Theresa, WI
- Average high temperature in January: 22.6°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 (22.6°F).
- Average low temperature in January: 10.8°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in January
Theresa, WI
- Average pressure in January: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Theresa, WI
- Average wind speed in January: 10mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in January
Theresa, WI
- Average humidity in January: 89%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Theresa, WI
- Average rainfall in January: 0.91"
The wettest months (with the highest rainfall) are May and June (2.6").
The driest months (with the least rainfall) are February and December (0.83").
Average rainfall days in January
Theresa, WI
- Average rainfall days in January: 3.1 days
The month with the highest number of rainy days is July (16.2 days).
The months with the least rainy days are January and February (3.1 days).
Average snowfall in January
Theresa, WI
- Average snowfall in January: 3.35"
The month with the highest snowfall is January (3.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Theresa, WI
- Average snowfall days in January: 13.4 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Theresa, WI
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 3h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in January
Theresa, WI
- Average sunshine days in January: 14.9 days
The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in January
Theresa, WI
- Average UV index in January: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in January
Theresa, WI
- Average cloud cover in January: 67
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in January
Theresa, WI
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
Theresa, Wisconsin, USA
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