... including targeted forecasts at the time of your arrival to each point!
I-72 runs east-west through Jacksonville, IL.
The I-55 runs north-south east of Jacksonville, IL, through Springfield, IL.
In Jacksonville, the summers are long, warm, and humid; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 22°F to 86°F and is rarely below 3°F or above 93°F.
The hot season lasts for 4.0 months, from May 21 to September 23, with an average daily high temperature above 76°F. The hottest month of the year in Jacksonville is July, with an average high of 86°F and low of 67°F.
The cold season lasts for 3.0 months, from November 30 to February 28, with an average daily high temperature below 46°F. The coldest month of the year in Jacksonville is January, with an average low of 22°F and high of 37°F.
A total of 75 historical tornado events that had recorded magnitude of 2 or above found in or near Jacksonville, IL.
The city was incorporated in 1825.
As of 2020, the city population is 17,616.
This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Jacksonville, Illinois.