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

29°F

-2°C

Humidity 33%
Wind Speed W 7 mph
Barometer 30.32 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 28 Jan 1:55 pm CST
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 27. West wind around 5 mph becoming calm.

    High: 27 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 11. Calm wind.

    Low: 11 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 28. Calm wind becoming northeast around 5 mph.

    High: 28 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 10. North northeast wind 3 to 5 mph.

    Low: 10 °F

    Cloudy then
    Slight Chance
    Snow Showers

  • Friday

    Friday: Partly sunny, with a high near 20. North wind 5 to 9 mph.

    High: 20 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 3. North wind 7 to 9 mph.

    Low: 3 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 17. North northwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 17 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 3. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 3 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 25. Calm wind becoming west around 6 mph in the afternoon.

    High: 25 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 27. West wind around 5 mph becoming calm.
Tonight
Mostly cloudy, with a low around 11. Calm wind.
Thursday
Mostly cloudy, with a high near 28. Calm wind becoming northeast around 5 mph.
Thursday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 10. North northeast wind 3 to 5 mph.
Friday
Partly sunny, with a high near 20. North wind 5 to 9 mph.
Friday Night
Mostly cloudy, with a low around 3. North wind 7 to 9 mph.
Saturday
Partly sunny, with a high near 17. North northwest wind 8 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 3. Northwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Partly sunny, with a high near 25. Calm wind becoming west around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 13. Light south southwest wind.
Monday
Partly sunny, with a high near 34. West southwest wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 17. Light southwest wind.
Tuesday
Partly sunny, with a high near 37. Calm wind becoming southwest around 6 mph in the morning.
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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:
12:21 pm CST Jan 28, 2026
Forecast Valid:
2pm CST Jan 28, 2026-6pm CST Feb 3, 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