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

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fair

34°F

1°C

Humidity 74%
Wind Speed N 9 mph
Barometer 30.32 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 1 Mar 8:15 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: Partly sunny, with a high near 53. Light east northeast wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 53 °F

    Partly Sunny

  • Tonight

    Tonight: Showers, mainly after 11pm. Low around 37. East northeast wind 7 to 9 mph. Chance of precipitation is 90%.

    Low: 37 °F

    Showers
    Likely then
    Showers

  • Monday

    Monday: Showers, mainly before noon. High near 49. East wind 5 to 9 mph. Chance of precipitation is 80%.

    High: 49 °F

    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers. Cloudy, with a low around 45. Light and variable wind becoming south 5 to 8 mph after midnight.

    Low: 45 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before noon. Mostly cloudy, with a high near 71. South southwest wind 9 to 16 mph, with gusts as high as 25 mph.

    High: 71 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 59. South wind 6 to 8 mph.

    Low: 59 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 72. South southwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. South southwest wind around 8 mph.

    Low: 58 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 71. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 71 °F

    Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 53. Light east northeast wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Tonight
Showers, mainly after 11pm. Low around 37. East northeast wind 7 to 9 mph. Chance of precipitation is 90%.
Monday
Showers, mainly before noon. High near 49. East wind 5 to 9 mph. Chance of precipitation is 80%.
Monday Night
A 50 percent chance of showers. Cloudy, with a low around 45. Light and variable wind becoming south 5 to 8 mph after midnight.
Tuesday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 71. South southwest wind 9 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
A 40 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 59. South wind 6 to 8 mph.
Wednesday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 72. South southwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. South southwest wind around 8 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 71. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind 6 to 8 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 75. South southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
Showers likely. Cloudy, with a high near 69. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
7:56 am CST Mar 1, 2026
Forecast Valid:
8am CST Mar 1, 2026-6pm CST Mar 7, 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