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

36°F

2°C

Humidity 91%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 33°F (1°C)
Visibility 7.00 mi
Last update 17 Feb 2:35 am CST
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. South wind 3 to 5 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 63. South southwest wind 6 to 14 mph, with gusts as high as 25 mph.

    High: 63 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 5am. Cloudy, with a low around 56. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 33 mph.

    Low: 56 °F

    Cloudy then
    Slight Chance
    Rain and
    Breezy

  • Wednesday

    Wednesday: Partly sunny, with a high near 71. Southwest wind 7 to 17 mph, with gusts as high as 28 mph.

    High: 71 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 56. South wind around 6 mph.

    Low: 56 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 70. South southwest wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    High: 70 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42. South southwest wind 8 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 42 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 55. West wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 55 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers after midnight. Partly cloudy, with a low around 35. Light and variable wind becoming north around 5 mph after midnight.

    Low: 35 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. South wind 3 to 5 mph.
Tuesday
Mostly cloudy, with a high near 63. South southwest wind 6 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of rain after 5am. Cloudy, with a low around 56. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 33 mph.
Wednesday
Partly sunny, with a high near 71. Southwest wind 7 to 17 mph, with gusts as high as 28 mph.
Wednesday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 56. South wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 70. South southwest wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Thursday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42. South southwest wind 8 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 55. West wind 5 to 11 mph, with gusts as high as 18 mph.
Friday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 35. Light and variable wind becoming north around 5 mph after midnight.
Saturday
A chance of showers, mainly after noon. Mostly sunny, with a high near 49. North wind 5 to 8 mph.
Saturday Night
A slight chance of rain and snow showers. Partly cloudy, with a low around 28. Northwest wind around 8 mph.
Sunday
Sunny, with a high near 42. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 21. North northwest wind around 7 mph.
Monday
Sunny, with a high near 40. North northwest wind 5 to 8 mph.
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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:
1:41 am CST Feb 17, 2026
Forecast Valid:
2am CST Feb 17, 2026-6pm CST Feb 23, 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