January weather forecastGlendale Heights, IL
January
Weather in January
January, the same as December, in Glendale Heights, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 16.7°F (-8.5°C) and 27.9°F (-2.3°C).Temperature
Glendale Heights's January weather reaches an average high of 27.9°F (-2.3°C) and an average low of 16.7°F (-8.5°C), making it the coldest month.Humidity
The months with the highest humidity are January and February, with an average relative humidity of 83%.Rainfall
In Glendale Heights, during January, the rain falls for 4.1 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Glendale Heights, during the entire year, the rain falls for 119.1 days and collects up to 10.83" (275mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 9.3 days and typically aggregates up to 1.5" (38mm) of snow.Daylight
The average length of the day in January is 9h and 32min.On the first day of January, sunrise is at 7:19 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:05 pm CST.
Sunshine
With an average of 3.7h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 1 during January translates into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Boost your sun resistance with garments that are densely woven yet spacious. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Glendale Heights, IL
- Average high temperature in January: 27.9°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in January: 16.7°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in January
Glendale 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
Glendale Heights, 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 (6.1mph).
Average humidity in January
Glendale Heights, 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 (74%).
Average rainfall in January
Glendale Heights, IL
- Average rainfall in January: 0.55"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February, November and December (0.51").
Average rainfall days in January
Glendale Heights, IL
- Average rainfall days in January: 4.1 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in January
Glendale Heights, IL
- Average snowfall in January: 1.5"
The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Glendale Heights, IL
- Average snowfall days in January: 9.3 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Glendale Heights, IL
- Average daylight in January: 9h and 30min
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 42min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Glendale Heights, IL
- Average sunshine days in January: 19.8 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in January
Glendale Heights, 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
Glendale Heights, 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 July, August and September (Cloud cover 32).
Average visibility in January
Glendale Heights, 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).
