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

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

A Few Clouds

76°F

24°C

Humidity 56%
Wind Speed NA
Barometer 30.10 in (1018.9 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 24 Jul 4:54 pm CDT
Extended Forecast for

2 Miles ENE Decatur 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 after 11pm. Mostly cloudy, with a low around 63. Light south wind. Chance of precipitation is 20%.

    Low: 63 °F

    Isolated
    Showers

  • Saturday

    Saturday: Isolated showers before 1pm. Mostly cloudy, with a high near 83. South wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 83 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 91 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73. South southwest wind 5 to 7 mph.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 94. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 94 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Southwest wind 7 to 14 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Tonight
Isolated showers after 11pm. Mostly cloudy, with a low around 63. Light south wind. Chance of precipitation is 20%.
Saturday
Isolated showers before 1pm. Mostly cloudy, with a high near 83. South wind 3 to 7 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 73. South southwest wind 5 to 7 mph.
Monday
Mostly sunny, with a high near 94. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 74. Southwest wind 7 to 14 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Mostly sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 69.
Friday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Decatur IL
 39.86°N 88.91°W (Elev. 686 ft)
Last Update:
1:26 pm CDT Jul 24, 2026
Forecast Valid:
5pm 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