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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: A 30 percent chance of snow showers, mainly after 5am. Mostly cloudy, with a low around 26. Light south southwest wind increasing to 8 to 13 mph. Winds could gust as high as 23 mph.

    Low: 26 °F

    Chance Snow
    Showers

  • Wednesday

    Wednesday: A chance of freezing rain before 8am, then a chance of rain showers between 8am and 10am. Cloudy, then gradually becoming mostly sunny, with a high near 45. Southwest wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 45 °F

    Chance
    Rain/Freezing
    Rain then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Southwest wind around 6 mph becoming calm after midnight.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 40. Calm wind becoming north around 5 mph.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 18. Calm wind becoming north 5 to 9 mph after midnight. Winds could gust as high as 18 mph.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 23. North wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 23 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 6. North northeast wind around 11 mph, with gusts as high as 21 mph.

    Low: 6 °F

    Chance Snow

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy, with a high near 16. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 16 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind 6 to 8 mph.

    Low: 10 °F

    Snow Likely

Detailed Forecast

Overnight
A 30 percent chance of snow showers, mainly after 5am. Mostly cloudy, with a low around 26. Light south southwest wind increasing to 8 to 13 mph. Winds could gust as high as 23 mph.
Wednesday
A chance of freezing rain before 8am, then a chance of rain showers between 8am and 10am. Cloudy, then gradually becoming mostly sunny, with a high near 45. Southwest wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 23. Southwest wind around 6 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 40. Calm wind becoming north around 5 mph.
Thursday Night
Mostly cloudy, with a low around 18. Calm wind becoming north 5 to 9 mph after midnight. Winds could gust as high as 18 mph.
Friday
Mostly cloudy, with a high near 23. North wind 10 to 13 mph, with gusts as high as 21 mph.
Friday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 6. North northeast wind around 11 mph, with gusts as high as 21 mph.
Saturday
Snow likely, mainly after noon. Cloudy, with a high near 16. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind 6 to 8 mph.
Sunday
Partly sunny, with a high near 23. North wind 5 to 7 mph.
Sunday Night
Partly cloudy, with a low around 6. Light northwest wind.
Monday
Mostly sunny, with a high near 24. West northwest wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 8. Light southwest wind.
Tuesday
Sunny, with a high near 31. South southwest wind 3 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:
1:27 am CST Jan 21, 2026
Forecast Valid:
1am CST Jan 21, 2026-6pm CST Jan 27, 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