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
In Prospect Heights, the month of January is known for its lowest average temperatures, reaching a high of 28.2°F (-2.1°C) and a low of 18°F (-7.8°C).Humidity
January and February, with an average relative humidity of 82%, are the most humid months in Prospect Heights.Rainfall
In Prospect Heights, in January, during 7 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, in Prospect Heights, there are 153.3 rainfall days, and 30.12" (765mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 11.8 days and accumulates 4.96" (126mm) of snow.Daylight
In January, the average length of the day is 9h and 32min.On the first day of January in Prospect Heights, sunrise is at 7:19 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:04 pm CST.
Sunshine
The month with the least sunshine in Prospect Heights is January, with an average of 3.7h of sunshine.UV index
The average daily maximum UV index in January in Prospect Heights is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 2 during January translates into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What month is the coldest in Prospect Heights?
How cold is January in Prospect Heights?
What are the most humid months in Prospect Heights?
What is the average humidity in January in Prospect Heights?
How much does it rain in Prospect Heights in January?
What is the snowiest month in Prospect Heights?
How much does it snow in Prospect Heights in January?
What is the average length of the day in January in Prospect Heights?
When are sunrise and sunset in January in Prospect Heights?
What is the month with the least sunshine in Prospect Heights?
How many hours of sunshine does Prospect Heights have in January?
How high is the UV index in January in Prospect Heights?
Average temperature in January
Prospect Heights, IL
- Average high temperature in January: 28.2°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 (28.2°F).
- Average low temperature in January: 18°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in January
Prospect 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
Prospect Heights, IL
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in January
Prospect 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 (72%).
Average rainfall in January
Prospect Heights, IL
- Average rainfall in January: 1.65"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is December (1.46").
Average rainfall days in January
Prospect Heights, IL
- Average rainfall days in January: 7 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in January
Prospect Heights, IL
- Average snowfall in January: 4.96"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Prospect Heights, IL
- Average snowfall days in January: 11.8 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Prospect Heights, 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 July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Prospect Heights, IL
- Average sunshine days in January: 13.6 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in January
Prospect 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
Prospect Heights, 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 29).
Average visibility in January
Prospect 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).
Prospect Heights, Illinois, USA
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