Jacksonville (IL) Weather and Climate: A Comprehensive Guide
The temperature in Jacksonville can vary greatly throughout the year.
The temperatures shift from very warm
to cold.
It also experiences much rain/snowfall throughout the year.
Now, let’s break down all the climate details for a clearer picture.
Average maximum day and minimum night temperature
Depending on the time of the year, temperatures range from very warm to chilly in Jacksonville. Average daytime temperatures reach a very warm 30°C in July. In February, the coolest month of the year, temperatures drop to a chilly 2°C.
At night, you can expect cooler temperatures, with averages dropping to around -8°C during this month. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Jacksonville has a relatively rain/snowy climate with high precipitation levels, averaging 1091 mm of rain/snowfall annually. Jacksonville can be quite wet during June, receiving approximately 154 mm of precipitation over 13 rainy days. In contrast January, experiences much drier conditions, with 50 mm of snow/rainfall, spread across 8 snowy/rainy days. For more details, please visit our Jacksonville Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Jacksonville can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.7 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.3 hours of sunlight per day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in Jacksonville.
The city experiences its highest humidity in December, reaching 78%. In April, the humidity drops to its lowest level at 65%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
broken clouds and slight rain broken clouds and no rain overcast and rainForecast for Jacksonville (IL)
4 m/s
5 m/s
5 m/s
The best time of year to visit Jacksonville in the United States of America
Other facts from our historical weather data:July has an average maximum temperature of 30°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 2°C.
June tops the wettest month list with 154 mm of rainfall.
January is the driest month with 50 mm of precipitation.
July is the sunniest month with an average of 320 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
