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.

A Few Clouds

81°F

27°C

Humidity 49%
Wind Speed N 13 G 22 mph
Barometer 30.08 in (1018.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 13 Sep 12:54 pm CDT
Extended Forecast for

Assumption IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 84. North northwest wind 9 to 11 mph, with gusts as high as 15 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. North northeast wind around 9 mph, with gusts as high as 17 mph.

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 83. East southeast wind 9 to 11 mph, with gusts as high as 17 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Southeast wind around 11 mph, with gusts as high as 18 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Sunny and hot, with a high near 97. South wind 8 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 17 mph.  Chance of precipitation is 50%.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 69. Light and variable wind.  Chance of precipitation is 50%.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm.  Mostly sunny, with a high near 93. Light and variable wind becoming southeast around 6 mph in the morning.

    High: 93 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 84. North northwest wind 9 to 11 mph, with gusts as high as 15 mph.
Tonight
Mostly cloudy, with a low around 58. North northeast wind around 9 mph, with gusts as high as 17 mph.
Monday
Mostly sunny, with a high near 83. East southeast wind 9 to 11 mph, with gusts as high as 17 mph.
Monday Night
Mostly clear, with a low around 67. Southeast wind around 11 mph, with gusts as high as 18 mph.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 97. South wind 8 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 93. Light and variable wind becoming southeast around 6 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
Partly cloudy, with a low around 67.
Friday
Mostly sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 65.
Saturday
Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Assumption IL
 39.51°N 89.05°W (Elev. 636 ft)
1:26 pm CDT Sep 13, 2026
1pm 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