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.

Mostly Cloudy

56°F

13°C

Humidity 28%
Wind Speed W 18 G 28 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 19 Apr 11:54 am CDT
Extended Forecast for

3 Miles ESE Bethany IL

Frost Advisory April 20, 01:00am until April 20, 08:00am
Click here for hazard details and duration
Frost Advisory

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 60. Breezy, with a west northwest wind 18 to 20 mph, with gusts as high as 32 mph.

    High: 60 °F

    Increasing
    Clouds and
    Breezy

  • Tonight

    Tonight: Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North wind 5 to 13 mph, with gusts as high as 22 mph.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 59. Light and variable wind becoming east around 6 mph in the morning.

    High: 59 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. South southeast wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76. West southwest wind around 10 mph, with gusts as high as 16 mph.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 60. Breezy, with a west northwest wind 18 to 20 mph, with gusts as high as 32 mph.
Tonight
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North wind 5 to 13 mph, with gusts as high as 22 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 59. Light and variable wind becoming east around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 46. South southeast wind 7 to 11 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 11 to 18 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind around 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 76. West southwest wind around 10 mph, with gusts as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 61.
Friday
Showers likely. Mostly cloudy, with a high near 74.
Friday Night
Showers likely. Mostly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Bethany IL
 39.63°N 88.69°W (Elev. 623 ft)
Last Update:
12:31 pm CDT Apr 19, 2026
Forecast Valid:
12pm CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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