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.

Overcast

46°F

8°C

Humidity 83%
Wind Speed SE 16 mph
Barometer 29.91 in (1013.0 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 18 Nov 3:54 am CST
Extended Forecast for

Hammond IL

  • Overnight

    Overnight: A 50 percent chance of rain and thunderstorms. Cloudy, with a low around 42. East southeast wind around 15 mph, with gusts as high as 21 mph.

    Low: 42 °F

    Chance Rain

  • Tuesday

    Tuesday: A chance of rain and thunderstorms before 5pm, then a slight chance of rain. Mostly cloudy, with a high near 53. Southeast wind 6 to 15 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    High: 53 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. Northeast wind around 6 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 54. Northeast wind around 6 mph becoming calm in the afternoon.

    High: 54 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Light and variable wind.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain likely, mainly after noon. Cloudy, with a high near 59. South wind 3 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Chance Rain
    then Rain
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 44. South southwest wind around 7 mph becoming north northeast after midnight.

    Low: 44 °F

    Chance Rain

  • Friday

    Friday: Rain likely, mainly after noon. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.

    High: 54 °F

    Rain Likely

  • Friday Night

    Friday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Overnight
A 50 percent chance of rain and thunderstorms. Cloudy, with a low around 42. East southeast wind around 15 mph, with gusts as high as 21 mph.
Tuesday
A chance of rain and thunderstorms before 5pm, then a slight chance of rain. Mostly cloudy, with a high near 53. Southeast wind 6 to 15 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 41. Northeast wind around 6 mph.
Wednesday
Cloudy, with a high near 54. Northeast wind around 6 mph becoming calm in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 41. Light and variable wind.
Thursday
Rain likely, mainly after noon. Cloudy, with a high near 59. South wind 3 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44. South southwest wind around 7 mph becoming north northeast after midnight.
Friday
Rain likely, mainly after noon. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hammond IL
 39.81°N 88.6°W (Elev. 673 ft)
Last Update:
3:16 am CST Nov 18, 2025
Forecast Valid:
4am CST Nov 18, 2025-6pm CST Nov 24, 2025
 
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