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Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

70°F

21°C

Humidity 79%
Wind Speed S 3 mph
Barometer 30.09 in (1018.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 24 Jul 10:54 pm CDT
Extended Forecast for

2 Miles SE Moweaqua IL

Heat Advisory July 26, 12:00pm until July 27, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Isolated showers. Cloudy, with a low around 66. Calm wind. Chance of precipitation is 20%.

    Low: 66 °F

    Isolated
    Showers

  • Saturday

    Saturday: Scattered showers between 8am and 1pm. Mostly cloudy, with a high near 82. South wind 3 to 7 mph. Chance of precipitation is 30%.

    High: 82 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. Light south wind.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 91. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 91 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. South southwest wind 3 to 6 mph.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 94. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 94 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. South southwest wind 7 to 11 mph becoming west northwest after midnight. Winds could gust as high as 17 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
Isolated showers. Cloudy, with a low around 66. Calm wind. Chance of precipitation is 20%.
Saturday
Scattered showers between 8am and 1pm. Mostly cloudy, with a high near 82. South wind 3 to 7 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 68. Light south wind.
Sunday
Mostly sunny, with a high near 91. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 72. South southwest wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 94. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 74. South southwest wind 7 to 11 mph becoming west northwest after midnight. Winds could gust as high as 17 mph.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 68.
Friday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Moweaqua IL
 39.6°N 88.98°W (Elev. 627 ft)
Last Update:
8:37 pm CDT Jul 24, 2026
Forecast Valid:
11pm CDT Jul 24, 2026-6pm CDT Jul 31, 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