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 >

Current conditions at

Centralia Municipal Airport (KENL)

Lat: 38.51°NLon: 89.09°WElev: 525ft.

Fair

79°F

26°C

Humidity 70%
Wind Speed SE 5 mph
Barometer 29.90 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 19 Sep 9:35 pm CDT
Extended Forecast for

Wamac IL

  • Overnight

    Overnight: Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 95. West wind 3 to 6 mph.

    High: 95 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before midnight, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 67. Light and variable wind becoming north around 5 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 82. North wind 3 to 8 mph. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind 3 to 8 mph.

    Low: 60 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph.
Sunday
Mostly sunny, with a high near 95. West wind 3 to 6 mph.
Sunday Night
Showers and thunderstorms likely, mainly before midnight, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 67. Light and variable wind becoming north around 5 mph. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 82. North wind 3 to 8 mph. Chance of precipitation is 40%.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind 3 to 8 mph.
Tuesday
Partly sunny, with a high near 74.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly cloudy, with a low around 57.
Friday
A 20 percent chance of showers. Partly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wamac IL
 38.5°N 89.16°W (Elev. 482 ft)
Last Update:
10:31 pm CDT Sep 19, 2026
Forecast Valid:
12am CDT Sep 20, 2026-6pm CDT Sep 26, 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