January weather forecastArlington Heights, IL
January
Weather in January
Arlington Heights starts the year shrouded in chill and gloom signifying the grip of winter. The area experiences the lowest mean temperatures with high and low averaging at 27.9°F (-2.3°C) and 17.4°F (-8.1°C) respectively. The landscape becomes a winter wonderland with 5.67" (144mm) of snow falling over an average of 13.1 days. High relative humidity and cloudiness contribute to the glacial ambience. Nights remain longer with daylight hours peaking at 9.5, indicating nature's adherence to winter etiquette.Temperature
January is the coldest month of the year in Arlington Heights, registering average temperatures as high as 27.9°F (-2.3°C) and as low as 17.4°F (-8.1°C).Humidity
January and February, with an average relative humidity of 82%, are the most humid months in Arlington Heights, Illinois.Rainfall
In January, in Arlington Heights, the rain falls for 6.6 days. Throughout January, 1.73" (44mm) of precipitation is accumulated. In Arlington Heights, during the entire year, the rain falls for 142.7 days and collects up to 27.91" (709mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Arlington Heights, in January, during 13.1 snowfall days, 5.67" (144mm) of snow is typically accumulated. In Arlington Heights, during the entire year, snow falls for 48.8 days and aggregates up to 21.02" (534mm) of snow.Daylight
In January, the average length of the day is 9h and 32min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:30 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:04 pm CST.
Sunshine
With an average of 3.7h of sunshine, January has the least sunshine of the year in Arlington Heights.UV index
The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.Note: During January, 2 as the daily maximum UV index converts into the following advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Arlington Heights, IL
- Average high temperature in January: 27.9°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in January: 17.4°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in January
Arlington 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
Arlington Heights, IL
- Average wind speed in January: 10.1mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in January
Arlington 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
Arlington Heights, IL
- Average rainfall in January: 1.73"
The wettest months (with the highest rainfall) are April and May (3.46").
The driest month (with the least rainfall) is November (1.57").
Average rainfall days in January
Arlington Heights, IL
- Average rainfall days in January: 6.6 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in January
Arlington Heights, IL
- Average snowfall in January: 5.67"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Arlington Heights, 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
Arlington 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: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Arlington Heights, IL
- Average sunshine days in January: 13.3 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in January
Arlington Heights, IL
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Arlington Heights, IL
- Average cloud cover in January: 62
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in January
Arlington Heights, 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).
