January weather forecastDonnellson, IL
January
Weather in January
January, the same as December, is a wintry winter month in Donnellson, Illinois, with an average temperature fluctuating between 35.4°F (1.9°C) and 22.6°F (-5.2°C).Temperature
January, with average temperatures reaching a high of 35.4°F (1.9°C) and a low of 22.6°F (-5.2°C), is the coldest month.Humidity
In January, the average relative humidity is 78%.Rainfall
In Donnellson, Illinois, during January, the rain falls for 7 days and regularly aggregates up to 1.46" (37mm) of precipitation. In Donnellson, during the entire year, the rain falls for 138.5 days and collects up to 24.33" (618mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Donnellson. In Donnellson, in January, during 6.2 snowfall days, 1.54" (39mm) of snow is typically accumulated. Throughout the year, in Donnellson, Illinois, there are 20.6 snowfall days, and 6.3" (160mm) of snow is accumulated.Daylight
In Donnellson, Illinois, the average length of the day in January is 9h and 48min.On the first day of the month, sunrise is at 7:16 am and sunset at 4:45 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:17 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4.3h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 during January translates into the following guidance:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Donnellson, IL
- Average high temperature in January: 35.4°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in January: 22.6°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in January
Donnellson, IL
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Donnellson, IL
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in January
Donnellson, IL
- Average humidity in January: 78%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Donnellson, IL
- Average rainfall in January: 1.46"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in January
Donnellson, IL
- Average rainfall days in January: 7 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7 days).
Average snowfall in January
Donnellson, IL
- Average snowfall in January: 1.54"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Donnellson, IL
- Average snowfall days in January: 6.2 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Donnellson, IL
- Average daylight in January: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in January
Donnellson, IL
- Average sunshine days in January: 19.3 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in January
Donnellson, IL
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Donnellson, IL
- Average cloud cover in January: 53
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in January
Donnellson, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
