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
The coldest time of the year is January, with temperatures averaging a high of 34.3°F (1.3°C) and a low of 22.3°F (-5.4°C).Humidity
In Dennison, Illinois, the average relative humidity in January is 80%.Rainfall
In Dennison, in January, it is raining for 8.2 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, there are 159.3 rainfall days, and 34.41" (874mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Dennison. The month with the most snowfall in Dennison is January, when snow falls for 7.8 days and typically aggregates up to 2.56" (65mm) of snow.Daylight
In January, the average length of the day in Dennison is 9h and 46min.On the first day of January in Dennison, 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
The months with the lowest UV index in Dennison are January, February, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In January, the maximum UV index of 2 suggests this advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What month is the coldest in Dennison?
How cold is January in Dennison?
What is the average humidity in January in Dennison?
How many days does it rain in January in Dennison?
What is the snowiest month in Dennison?
How many days does it snow in January in Dennison?
How many hours of daylight does Dennison have in January?
What time are sunrise and sunset in January in Dennison?
What is the month with the least sunshine in Dennison?
How long on average sun shines in January in Dennison?
What are the months with the lowest UV index in Dennison?
How high is the UV index in January in Dennison?
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 5min
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 2min
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).
Dennison, Illinois, USA
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