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.

Overcast

68°F

20°C

Humidity 79%
Wind Speed NW 8 mph
Barometer 29.77 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 11 Mar 8:15 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: Showers and thunderstorms before 4pm, then showers likely. Some of the storms could be severe. Temperature falling to around 50 by 5pm. Breezy, with a southwest wind 18 to 28 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 90%.

    High: 71 °F⇓

    Breezy.
    Severe
    Thunderstorms
    then Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 32. North northwest wind 9 to 17 mph, with gusts as high as 29 mph.

    Low: 32 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 54. Northwest wind 5 to 7 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. South southwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 22 mph.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 62. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 62 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. West northwest wind around 5 mph becoming light and variable in the evening.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 67. East wind 6 to 9 mph becoming south southeast in the afternoon.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. South southeast wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms, then showers likely after 1pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 15 to 24 mph, with gusts as high as 34 mph.

    High: 70 °F

    Breezy.
    Slight Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Showers and thunderstorms before 4pm, then showers likely. Some of the storms could be severe. Temperature falling to around 50 by 5pm. Breezy, with a southwest wind 18 to 28 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 90%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 32. North northwest wind 9 to 17 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 54. Northwest wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 41. South southwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 22 mph.
Friday
Mostly sunny, with a high near 62. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 38. West northwest wind around 5 mph becoming light and variable in the evening.
Saturday
Sunny, with a high near 67. East wind 6 to 9 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 53. South southeast wind 7 to 14 mph, with gusts as high as 23 mph.
Sunday
A slight chance of showers and thunderstorms, then showers likely after 1pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 15 to 24 mph, with gusts as high as 34 mph.
Sunday Night
A chance of rain showers before 1am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 29. Blustery, with a northwest wind 18 to 21 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 41. Northwest wind 15 to 17 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 22. Northwest wind 5 to 10 mph.
Tuesday
Partly sunny, with a high near 43. West northwest 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 88.58°W
Last Update:
8:26 am CDT Mar 11, 2026
Forecast Valid:
8am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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