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
Wheaton's January weather, with an average high temperature of 28°F (-2.2°C) and an average low temperature of 16.7°F (-8.5°C), tends to be the coldest of the year.Humidity
The months with the highest humidity are January and February, with an average relative humidity of 83%.Rainfall
In January, the rain falls for 6.4 days. Throughout January, 1.81" (46mm) of precipitation is accumulated. Throughout the year, there are 164.3 rainfall days, and 33.78" (858mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. January is the month with the most snowfall. Snow falls for 13.1 days and accumulates 5.87" (149mm) of snow.Daylight
In Wheaton, Illinois, the average length of the day in January is 9h and 33min.On the first day of the month, sunrise is at 7:19 am and sunset at 4:31 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:05 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.7h of sunshine.UV index
The month with the lowest UV index is January, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 1 in January, converts 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. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most?
How many days does it snow in January?
How many hours of daylight does Wheaton have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Wheaton have in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Wheaton, IL
- Average high temperature in January: 28°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in January: 16.7°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in January
Wheaton, 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
Wheaton, IL
- Average wind speed in January: 9.8mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Wheaton, IL
- Average humidity in January: 83%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Wheaton, IL
- Average rainfall in January: 1.81"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are November and December (1.65").
Average rainfall days in January
Wheaton, IL
- Average rainfall days in January: 6.4 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in January
Wheaton, IL
- Average snowfall in January: 5.87"
The month with the highest snowfall is January (5.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Wheaton, IL
- Average snowfall days in January: 13.1 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Wheaton, IL
- Average daylight in January: 9h and 3min
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 4min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Wheaton, IL
- Average sunshine days in January: 14.3 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in January
Wheaton, IL
- Average UV index in January: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
Wheaton, IL
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in January
Wheaton, IL
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Wheaton, Illinois, USA
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