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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

66°F

19°C

Humidity 78%
Wind Speed NE 12 mph
Barometer 30.09 in (1018.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 14 Oct 10:54 pm CDT
Extended Forecast for

Nokomis IL

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 63. Calm wind becoming east around 5 mph after midnight.

    Low: 63 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Showers likely before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. East wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before midnight, then a chance of showers between midnight and 3am. Increasing clouds, with a low around 46. Southwest wind 10 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely

  • Friday

    Friday: A slight chance of showers before 4pm, then a chance of showers after 5pm. Partly sunny, with a high near 56. Breezy, with a northwest wind 17 to 20 mph. Chance of precipitation is 30%.

    High: 56 °F

    Partly Sunny
    and Breezy
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. North wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 63. Calm wind becoming east around 5 mph after midnight.
Thursday
Showers likely before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. East wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely before midnight, then a chance of showers between midnight and 3am. Increasing clouds, with a low around 46. Southwest wind 10 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Friday
A slight chance of showers before 4pm, then a chance of showers after 5pm. Partly sunny, with a high near 56. Breezy, with a northwest wind 17 to 20 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 38. North wind 8 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 36.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nokomis IL
 39.3°N 89.29°W (Elev. 669 ft)
Last Update:
10:21 pm CDT Oct 14, 2026
Forecast Valid:
11pm CDT Oct 14, 2026-6pm CDT Oct 21, 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