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
Riverside reaches its lowest average temperatures in January, measuring 29.1°F (-1.6°C) at the peak and 19.2°F (-7.1°C) at the lowest.Humidity
January and February, with an average relative humidity of 82%, are the most humid months in Riverside.Rainfall
In Riverside, in January, during 3.1 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. In Riverside, during the entire year, the rain falls for 92 days and collects up to 7.4" (188mm) of precipitation.Snowfall
Months with snowfall in Riverside are January through April, October through December. In Riverside, during January, snow falls for 7.2 days and regularly aggregates up to 1.06" (27mm) of snow. In Riverside, during the entire year, snow falls for 26.5 days and aggregates up to 4.06" (103mm) of snow.Daylight
In January, the average length of the day is 9h and 33min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:30 pm. On the last day of January, in Riverside, sunrise is at 7:04 am and sunset at 5:04 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.8h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 1 in January leads to these guidelines:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Riverside?
How cold is it in Riverside in January?
What are the most humid months in Riverside?
What is the average humidity in January in Riverside?
How much does it rain in Riverside in January?
How much does it snow in Riverside in January?
How many hours of daylight does Riverside have in January?
What time are sunrise and sunset in January in Riverside?
What is the month with the least sunshine in Riverside?
How many hours of sunshine does Riverside have in January?
What is the month with the lowest UV index in Riverside?
How high is the UV index in January in Riverside?
Average temperature in January
Riverside, IL
- Average high temperature in January: 29.1°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in January: 19.2°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 (19.2°F).
Average pressure in January
Riverside, IL
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Riverside, IL
- Average wind speed in January: 10.9mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in January
Riverside, IL
- Average humidity in January: 82%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Riverside, IL
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are February, March, November and December (0.39").
Average rainfall days in January
Riverside, IL
- Average rainfall days in January: 3.1 days
The month with the highest number of rainy days is June (11.7 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in January
Riverside, IL
- Average snowfall in January: 1.06"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Riverside, IL
- Average snowfall days in January: 7.2 days
The month with the highest number of snowfall days is February (7.3 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
Riverside, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Riverside, IL
- Average sunshine days in January: 22.1 days
The month with the most sunshine days is December (23.7 days).
The month with the least sunshine days is June (14.3 days).
Average UV index in January
Riverside, IL
- Average UV index in January: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Riverside, IL
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
Riverside, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Riverside, Illinois, USA
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