January weather forecastOnalaska, WI
January
Weather in January
January, the same as December, in Onalaska, Wisconsin, is another subzero cold winter month, with an average temperature ranging between min 8.2°F (-13.2°C) and max 21.6°F (-5.8°C).Temperature
January, noted for its average high-temperature of 21.6°F (-5.8°C) and an average low-temperature of 8.2°F (-13.2°C), is considered the coldest month.Humidity
The most humid month is January, with an average relative humidity of 90%.Rainfall
The month with the least rainfall is January, when the rain falls for 3.4 days and typically collects 0.91" (23mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Onalaska, in January, during 11.8 snowfall days, 4.72" (120mm) of snow is typically accumulated. In Onalaska, during the entire year, snow falls for 48.3 days and aggregates up to 20.2" (513mm) of snow.Daylight
In Onalaska, the average length of the day in January is 9h and 21min.On the first day of January in Onalaska, sunrise is at 7:39 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:13 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.3h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Onalaska. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In January, the maximum UV index of 1 suggests these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Onalaska, WI
- Average high temperature in January: 21.6°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 (21.6°F).
- Average low temperature in January: 8.2°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).
Average pressure in January
Onalaska, WI
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Onalaska, WI
- Average wind speed in January: 8.9mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in January
Onalaska, WI
- Average humidity in January: 90%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (76%).
Average rainfall in January
Onalaska, WI
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is June (4.61").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in January
Onalaska, WI
- Average rainfall days in January: 3.4 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in January
Onalaska, WI
- Average snowfall in January: 4.72"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Onalaska, WI
- Average snowfall days in January: 11.8 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Onalaska, WI
- Average daylight in January: 9h and 24min
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 18min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in January
Onalaska, WI
- Average sunshine days in January: 17.3 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in January
Onalaska, WI
- Average UV index in January: 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, February, November and December (UV index 1).
Average cloud cover in January
Onalaska, WI
- Average cloud cover in January: 66
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in January
Onalaska, WI
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
