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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Hazardous Weather Conditions

Current conditions at

Flora Municipal Airport (KFOA)

Lat: 38.67°NLon: 88.45°WElev: 459ft.

Partly Cloudy

73°F

23°C

Humidity 94%
Wind Speed NE 5 mph
Barometer 30.15 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 18 Sep 5:35 am CDT
Extended Forecast for

Louisville IL

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 92. Heat index values as high as 101. Light north northeast wind.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 69. East northeast wind 3 to 5 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 94. Light and variable wind becoming south around 6 mph in the morning.

    High: 94 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 70. Light and variable wind.

    Low: 70 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 93. Light and variable wind becoming west northwest around 6 mph in the morning.

    High: 93 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Northeast wind 3 to 5 mph.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. North wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 92. Heat index values as high as 101. Light north northeast wind.
Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 69. East northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 94. Light and variable wind becoming south around 6 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 70. Light and variable wind.
Sunday
Mostly sunny, with a high near 93. Light and variable wind becoming west northwest around 6 mph in the morning.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Northeast wind 3 to 5 mph.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. North wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Louisville IL
 38.76°N 88.52°W (Elev. 499 ft)
Last Update:
5:16 am CDT Sep 18, 2026
Forecast Valid:
5am CDT Sep 18, 2026-6pm CDT Sep 24, 2026
 
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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