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.

Fair

70°F

21°C

Humidity 76%
Wind Speed NW 9 mph
Barometer 30.03 in (1016.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 19 May 6:54 pm CDT
Extended Forecast for

Hammond IL

  • Tonight

    Tonight: A 20 percent chance of showers after 2am. Cloudy, with a low around 54. North wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 65. North northeast wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 65 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. Northeast wind 10 to 15 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69. East wind 13 to 16 mph, with gusts as high as 23 mph.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Increasing clouds, with a low around 51. East wind around 14 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 1pm. High near 68. East wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 68 °F

    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 56. East wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 56 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 76.

    High: 76 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers after 2am. Cloudy, with a low around 54. North wind 9 to 13 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 65. North northeast wind 11 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 45. Northeast wind 10 to 15 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 69. East wind 13 to 16 mph, with gusts as high as 23 mph.
Thursday Night
A 40 percent chance of showers after 1am. Increasing clouds, with a low around 51. East wind around 14 mph, with gusts as high as 20 mph.
Friday
Showers, with thunderstorms also possible after 1pm. High near 68. East wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Friday Night
A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 56. East wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.
Saturday
Mostly cloudy, with a high near 76.
Saturday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 58.
Sunday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 78.
Sunday Night
Mostly cloudy, with a low around 59.
Memorial Day
A chance of showers. Partly sunny, with a high near 79.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
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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:
6:11 pm CDT May 19, 2026
Forecast Valid:
7pm CDT May 19, 2026-6pm CDT May 26, 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