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.

Fair

48°F

9°C

Humidity 54%
Wind Speed NW 5 mph
Barometer 30.03 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 13 Mar 7:55 pm CDT
Extended Forecast for

Flat Rock IL

  • Tonight

    Tonight: Partly cloudy, with a low around 34. West northwest wind 5 to 8 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 57. East northeast wind 6 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 17 mph.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 47. East southeast wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 47 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 50 percent chance of showers after 1pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 70 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Rain before 1am, then rain and snow likely between 1am and 4am, then snow likely after 4am. Low around 26. Breezy, with a south wind around 22 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A 50 percent chance of snow. Cloudy, with a high near 30. Blustery, with a west wind 22 to 24 mph, with gusts as high as 36 mph.

    High: 30 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 29 mph.

    Low: 14 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 34. West northwest wind 5 to 8 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.
Saturday
Mostly sunny, with a high near 57. East northeast wind 6 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 17 mph.
Saturday Night
Increasing clouds, with a low around 47. East southeast wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday
A 50 percent chance of showers after 1pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 40 mph.
Sunday Night
Rain before 1am, then rain and snow likely between 1am and 4am, then snow likely after 4am. Low around 26. Breezy, with a south wind around 22 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Monday
A 50 percent chance of snow. Cloudy, with a high near 30. Blustery, with a west wind 22 to 24 mph, with gusts as high as 36 mph.
Monday Night
Mostly cloudy, with a low around 14. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 29 mph.
Tuesday
Partly sunny, with a high near 32.
Tuesday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 23.
Wednesday
Partly sunny, with a high near 52.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Flat Rock IL
 38.89°N 87.69°W (Elev. 554 ft)
Last Update:
7:46 pm CDT Mar 13, 2026
Forecast Valid:
8pm CDT Mar 13, 2026-6pm CDT Mar 20, 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