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

27°F

-3°C

Humidity 51%
Wind Speed SW 6 mph
Barometer 29.92 in
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 15 Jan 10:15 pm CST
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: A 30 percent chance of snow showers, mainly before 1am. Mostly cloudy, with a temperature rising to around 33 by 5am. South wind 8 to 13 mph, with gusts as high as 24 mph.

    Low: 25 °F⇑

    Chance Snow
    Showers

  • Friday

    Friday: A 20 percent chance of showers after 5pm. Mostly cloudy, with a high near 46. West southwest wind 8 to 14 mph, with gusts as high as 25 mph.

    High: 46 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of rain showers before 10pm, then a chance of snow showers between 10pm and midnight. Mostly cloudy, with a low around 25. West southwest wind around 8 mph. Chance of precipitation is 30%.

    Low: 25 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 31. West northwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 31 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 13. West northwest wind 3 to 6 mph.

    Low: 13 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 29. Light west wind becoming west southwest 5 to 10 mph in the morning.

    High: 29 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16. South southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 16 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 26. Northwest wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 26 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 9. Northwest wind around 6 mph becoming calm in the evening.

    Low: 9 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of snow showers, mainly before 1am. Mostly cloudy, with a temperature rising to around 33 by 5am. South wind 8 to 13 mph, with gusts as high as 24 mph.
Friday
A 20 percent chance of showers after 5pm. Mostly cloudy, with a high near 46. West southwest wind 8 to 14 mph, with gusts as high as 25 mph.
Friday Night
A chance of rain showers before 10pm, then a chance of snow showers between 10pm and midnight. Mostly cloudy, with a low around 25. West southwest wind around 8 mph. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 31. West northwest wind 6 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 13. West northwest wind 3 to 6 mph.
Sunday
Sunny, with a high near 29. Light west wind becoming west southwest 5 to 10 mph in the morning.
Sunday Night
Partly cloudy, with a low around 16. South southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
M.L.King Day
Mostly sunny, with a high near 26. Northwest wind 7 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 9. Northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 33. Calm wind becoming southwest 5 to 9 mph in the morning.
Tuesday Night
Mostly clear, with a low around 22. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 44. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
A slight chance of rain or freezing rain. Partly cloudy, with a low around 23. Southwest wind around 6 mph becoming north northeast after midnight.
Thursday
A slight chance of showers. Mostly sunny, with a high near 42. North northeast wind around 7 mph becoming south southeast in the afternoon.
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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:
10:11 pm CST Jan 15, 2026
Forecast Valid:
10pm CST Jan 15, 2026-6pm CST Jan 22, 2026
 
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Additional Resources

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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