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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

39°F

4°C

Humidity 86%
Wind Speed N 6 mph
Barometer 30.54 in (1034.5 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 17 Oct 7:54 am CDT
Extended Forecast for

4 Miles SW Stonington IL

Frost Advisory October 18, 01:00am until October 18, 09:00am
Frost Advisory October 17, 08:41am until October 17, 09:00am
Click here for hazard details and duration
Frost Advisory
...
  •  
    Frost Advisory October 17, 08:41am until October 17, 09:00am

    NOW until 9:00am Sat

    Frost Advisory

  • Today

    High: 60 °F

    Patchy Frost
    then Sunny

  • Tonight

    Tonight: Areas of frost after 4am. Otherwise, clear, with a low around 35. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 35 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 66. South wind 5 to 9 mph.

    High: 66 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 36. Light south southeast wind.

    Low: 36 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. Light south southeast wind.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Light east southeast wind.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Today
Patchy frost before 9am. Otherwise, sunny, with a high near 60. North wind around 5 mph becoming calm in the morning.
Tonight
Areas of frost after 4am. Otherwise, clear, with a low around 35. Calm wind becoming south southeast around 5 mph after midnight.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 66. South wind 5 to 9 mph.
Sunday Night
Clear, with a low around 36. Light south southeast wind.
Monday
Sunny, with a high near 72. Light south southeast wind.
Monday Night
Mostly clear, with a low around 40. Calm wind.
Tuesday
Sunny, with a high near 75. Light east southeast wind.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Stonington IL
 39.61°N 89.24°W (Elev. 623 ft)
Last Update:
4:26 am CDT Oct 17, 2026
Forecast Valid:
8am CDT Oct 17, 2026-6pm CDT Oct 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation