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

28°F

-2°C

Humidity 44%
Wind Speed NE 8 mph
Barometer 30.31 in
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 29 Jan 11:35 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: Partly sunny, with a high near 29. East wind around 6 mph.

    High: 29 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of flurries before 2am, then a slight chance of snow between 2am and 4am. Cloudy, with a low around 13. North northeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 13 °F

    Cloudy then
    Slight Chance
    Snow

  • Friday

    Friday: A chance of flurries before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 21. North wind 6 to 11 mph.

    High: 21 °F

    Chance
    Flurries

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 4. Wind chill values as low as -9. North northwest wind 7 to 9 mph.

    Low: 4 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 19. Northwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 19 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 4. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 4 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 27. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 27 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of snow showers after midnight. Mostly cloudy, with a low around 16. Light south southwest wind.

    Low: 16 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Monday

    Monday: Partly sunny, with a high near 35. West southwest wind 3 to 7 mph.

    High: 35 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 29. East wind around 6 mph.
Tonight
A chance of flurries before 2am, then a slight chance of snow between 2am and 4am. Cloudy, with a low around 13. North northeast wind around 5 mph. Chance of precipitation is 20%.
Friday
A chance of flurries before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 21. North wind 6 to 11 mph.
Friday Night
Mostly cloudy, with a low around 4. Wind chill values as low as -9. North northwest wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 19. Northwest wind 8 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 4. Northwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 27. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
A slight chance of snow showers after midnight. Mostly cloudy, with a low around 16. Light south southwest wind.
Monday
Partly sunny, with a high near 35. West southwest wind 3 to 7 mph.
Monday Night
Mostly cloudy, with a low around 23. Light west southwest wind.
Tuesday
Mostly cloudy, with a high near 37. Calm wind becoming south southwest around 5 mph.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 23. Calm wind becoming north around 5 mph after midnight.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 37. North wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
10:47 am CST Jan 29, 2026
Forecast Valid:
11am CST Jan 29, 2026-6pm CST Feb 4, 2026
 
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Additional Resources

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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