National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

70°F

21°C

Humidity 82%
Wind Speed SE 7 mph
Barometer 30.12 in (1019.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 Sep 3:56 pm CDT
Extended Forecast for

Milledgeville IL

Flood Watch September 19, 01:00am until September 19, 07:00pm
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 5pm. Partly sunny, with a high near 72. East wind around 10 mph.

    High: 72 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 63. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Heavy
    Rain

  • Saturday

    Saturday: Showers and possibly a thunderstorm, mainly before 11am, then a chance of showers and thunderstorms after 11am. Some of the storms could produce heavy rainfall. High near 80. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 80 °F

    Heavy Rain
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 62. South wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    Low: 62 °F

    Showers

  • Sunday

    Sunday: Showers likely. Mostly cloudy, with a high near 69. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 69 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers. Cloudy, with a high near 65.

    High: 65 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 63.

    High: 63 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 5pm. Partly sunny, with a high near 72. East wind around 10 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 63. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Showers and possibly a thunderstorm, mainly before 11am, then a chance of showers and thunderstorms after 11am. Some of the storms could produce heavy rainfall. High near 80. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 62. South wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Sunday
Showers likely. Mostly cloudy, with a high near 69. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54.
Monday
A 50 percent chance of showers. Cloudy, with a high near 65.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 49.
Tuesday
Mostly cloudy, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Partly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Partly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Milledgeville IL
 41.97°N 89.78°W (Elev. 768 ft)
Last Update:
3:12 pm CDT Sep 18, 2026
Forecast Valid:
4pm CDT Sep 18, 2026-6pm CDT Sep 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation