Fire Weather Concerns and Severe Weather

Dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the northern and central High Plains through this weekend, where fuels remain largely receptive. Severe thunderstorms and heavy rainfall are possible from the Plains into the Upper Midwest, as well as in the Ohio Valley and portions of the Mid-Atlantic through this weekend. Read More >

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

75°F

24°C

Humidity 71%
Wind Speed N 6 mph
Barometer 30.06 in (1017.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 13 Sep 9:54 am CDT
Extended Forecast for

Decatur Airport IL

  • Today

    Today: Isolated showers after 5pm.  Mostly sunny, with a high near 82. North wind 5 to 13 mph, with gusts as high as 16 mph.  Chance of precipitation is 10%.

    High: 82 °F

    Mostly Sunny
    then Isolated
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. North northeast wind around 9 mph, with gusts as high as 16 mph.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81. East southeast wind 10 to 14 mph, with gusts as high as 18 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. Southeast wind 14 to 16 mph, with gusts as high as 21 mph.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers after 1pm.  Sunny, with a high near 94. South wind 11 to 15 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 94 °F

    Sunny then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 67. North northwest wind 6 to 8 mph becoming northeast in the evening.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 89. East northeast wind 6 to 8 mph.

    High: 89 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Isolated showers after 5pm. Mostly sunny, with a high near 82. North wind 5 to 13 mph, with gusts as high as 16 mph. Chance of precipitation is 10%.
Tonight
Mostly cloudy, with a low around 57. North northeast wind around 9 mph, with gusts as high as 16 mph.
Monday
Mostly sunny, with a high near 81. East southeast wind 10 to 14 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 68. Southeast wind 14 to 16 mph, with gusts as high as 21 mph.
Tuesday
A 30 percent chance of showers after 1pm. Sunny, with a high near 94. South wind 11 to 15 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. North northwest wind 6 to 8 mph becoming northeast in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 89. East northeast wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 67.
Friday
A chance of showers. Mostly sunny, with a high near 85.
Friday Night
A chance of showers. Partly cloudy, with a low around 61.
Saturday
A chance of showers. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur Airport IL
 39.84°N 88.85°W (Elev. 686 ft)
9:31 am CDT Sep 13, 2026
10am CDT Sep 13, 2026-6pm CDT Sep 19, 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