January weather forecastDennison, IL
January
Weather in January
January, like December, in Dennison, Illinois, is another cold winter month, with an average temperature fluctuating between 34.3°F (1.3°C) and 22.3°F (-5.4°C).Temperature
Dennison's January weather, with an average high temperature of 34.3°F (1.3°C) and an average low temperature of 22.3°F (-5.4°C), tends to be the coldest of the year.Humidity
In January, the average relative humidity is 80%.Rainfall
In January, in Dennison, the rain falls for 8.2 days. Throughout January, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Dennison, there are 159.3 rainfall days, and 34.41" (874mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. January is the month with the most snowfall. Snow falls for 7.8 days and accumulates 2.56" (65mm) of snow.Daylight
The average length of the day in January is 9h and 46min.On the first day of January, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 5:08 pm CST.
Sunshine
The months with the least sunshine are January and December, with an average of 4.3h of sunshine.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In January, a daily UV index of 2 turns into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Dennison, IL
- Average high temperature in January: 34.3°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in January: 22.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in January
Dennison, IL
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Dennison, IL
- Average wind speed in January: 10mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in January
Dennison, IL
- Average humidity in January: 80%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Dennison, IL
- Average rainfall in January: 2.44"
The wettest month (with the highest rainfall) is April (4.96").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in January
Dennison, IL
- Average rainfall days in January: 8.2 days
The month with the highest number of rainy days is May (20.6 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in January
Dennison, IL
- Average snowfall in January: 2.56"
The month with the highest snowfall is January (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Dennison, IL
- Average snowfall days in January: 7.8 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Dennison, 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 24min).
- Average sunshine in January: 4h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 4h and 18min).
Average sunshine days in January
Dennison, IL
- Average sunshine days in January: 16.1 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (7.9 days).
Average UV index in January
Dennison, 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, October, November and December (UV index 2).
Average cloud cover in January
Dennison, IL
- Average cloud cover in January: 57
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility in January
Dennison, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
