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 month is January, with an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 18.9°F (-7.3°C).Humidity
The months with the highest humidity in Chicago Heights are January and February, with an average relative humidity of 82%.Rainfall
In January, in Chicago Heights, the rain falls for 6.8 days. Throughout January, 1.77" (45mm) of precipitation is accumulated. In Chicago Heights, during the entire year, the rain falls for 155.6 days and collects up to 31.3" (795mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Chicago Heights. The month with the most snowfall in Chicago Heights is January, when snow falls for 12.6 days and typically aggregates up to 4.53" (115mm) of snow.Daylight
In Chicago Heights, the average length of the day in January is 9h and 35min.On the first day of the month, sunrise is at 7:16 am and sunset at 4:31 pm. On the last day of January, sunrise is at 7:03 am and sunset at 5:04 pm CST.
Sunshine
January has the least sunshine of the year in Chicago Heights, with an average of 3.6h of sunshine.UV index
In January, the average daily maximum UV index in Chicago Heights is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 2 in January translates 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. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Stay sun-safe with clothing that is both closely woven and worn loosely. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
What part of the year is the coldest in Chicago Heights?
How cold is January in Chicago Heights?
What are the most humid months in Chicago Heights?
What is the average humidity in January in Chicago Heights?
How much does it rain in Chicago Heights in January?
When does it snow the most in Chicago Heights?
How many days does it snow in January in Chicago Heights?
How many hours of daylight does Chicago Heights have in January?
When is the sunrise / sunset in January in Chicago Heights?
What is the month with the least sunshine in Chicago Heights?
How long on average sun shines in January in Chicago Heights?
What is the UV index intensity in January in Chicago Heights?
Average temperature in January
Chicago Heights, IL
- Average high temperature in January: 29.7°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in January: 18.9°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 (18.9°F).
Average pressure in January
Chicago Heights, 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
Chicago Heights, IL
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in January
Chicago Heights, 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 (73%).
Average rainfall in January
Chicago Heights, IL
- Average rainfall in January: 1.77"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in January
Chicago Heights, IL
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in January
Chicago Heights, IL
- Average snowfall in January: 4.53"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Chicago Heights, IL
- Average snowfall days in January: 12.6 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Chicago Heights, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
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: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in January
Chicago Heights, IL
- Average sunshine days in January: 13 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).
Average UV index in January
Chicago Heights, IL
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Chicago Heights, IL
- Average cloud cover in January: 62
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Chicago Heights, IL
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Chicago Heights, Illinois, USA
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