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

Hazardous Weather Conditions

Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fair

10°F

-12°C

Humidity 75%
Wind Speed Calm
Barometer 30.41 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Last update 28 Jan 1:35 am CST
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: Mostly clear, with a low around 1. Light and variable wind.

    Low: 1 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 27. Wind chill values as low as -6. Calm wind becoming west 5 to 8 mph in the morning.

    High: 27 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 11. South southwest wind around 5 mph becoming calm in the evening.

    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: Mostly cloudy, with a low around 10. North northeast wind 3 to 5 mph.

    Low: 10 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 20. North wind 5 to 8 mph.

    High: 20 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 3. North wind around 7 mph.

    Low: 3 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 17. Northwest wind 7 to 9 mph.

    High: 17 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 3. Northwest wind around 6 mph becoming calm in the evening.

    Low: 3 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 1. Light and variable wind.
Wednesday
Mostly sunny, with a high near 27. Wind chill values as low as -6. Calm wind becoming west 5 to 8 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 11. South southwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly cloudy, with a high near 28. Calm wind becoming northeast around 5 mph.
Thursday Night
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 8 mph.
Friday Night
Partly cloudy, with a low around 3. North wind around 7 mph.
Saturday
Mostly sunny, with a high near 17. Northwest wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 3. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 25. Calm wind becoming west around 6 mph in the afternoon.
Sunday Night
A slight chance of snow showers. Mostly cloudy, with a low around 13. Light southwest wind.
Monday
Partly sunny, with a high near 34. West southwest wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 17. Calm wind.
Tuesday
Mostly cloudy, with a high near 37. Calm wind becoming south 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:
12:36 am CST Jan 28, 2026
Forecast Valid:
1am CST Jan 28, 2026-6pm CST Feb 3, 2026
 
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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