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

Robinson Municipal Airport (KRSV)

Lat: 39.01°NLon: 87.65°WElev: 449ft.

Partly Cloudy

43°F

6°C

Humidity 93%
Wind Speed NE 3 mph
Barometer 30.17 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 9 Jan 6:55 pm CST
Extended Forecast for

Flat Rock IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. East wind 3 to 6 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain before 5pm, then a slight chance of rain and snow showers. Cloudy, then gradual clearing during the afternoon, with a high near 45. Light north northwest wind becoming west northwest 11 to 16 mph in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance Rain
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. West northwest wind 9 to 16 mph, with gusts as high as 25 mph.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 35. Northwest wind 8 to 17 mph, with gusts as high as 25 mph.

    High: 35 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22. West wind 5 to 8 mph becoming south southwest after midnight.

    Low: 22 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 45. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 45 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 40. East wind 3 to 6 mph.
Saturday
A chance of rain before 5pm, then a slight chance of rain and snow showers. Cloudy, then gradual clearing during the afternoon, with a high near 45. Light north northwest wind becoming west northwest 11 to 16 mph in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 25. West northwest wind 9 to 16 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 35. Northwest wind 8 to 17 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 22. West wind 5 to 8 mph becoming south southwest after midnight.
Monday
Sunny, with a high near 45. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 31. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Tuesday
Partly sunny, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Mostly sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Mostly cloudy, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Flat Rock IL
 38.91°N 87.68°W (Elev. 502 ft)
Last Update:
6:36 pm CST Jan 9, 2026
Forecast Valid:
7pm CST Jan 9, 2026-6pm CST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation