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

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fair

54°F

12°C

Humidity 48%
Wind Speed NW 14 G 21 mph
Barometer 30.05 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 1 May 8:35 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: Sunny, with a high near 65. North northwest wind 6 to 10 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: A chance of sprinkles after 1am. Partly cloudy, with a low around 42. North wind around 6 mph becoming calm in the evening.

    Low: 42 °F

    Chance
    Sprinkles

  • Saturday

    Saturday: A chance of sprinkles before 11am, then a slight chance of showers after 11am. Mostly sunny, with a high near 62. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 62 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of sprinkles before 7pm. Mostly clear, with a low around 40. North northwest wind around 6 mph becoming calm in the evening.

    Low: 40 °F

    Chance
    Sprinkles

  • Sunday

    Sunday: Sunny, with a high near 71. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 55. South southwest wind around 10 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 80. Southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 58. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 71. South southwest wind 14 to 17 mph, with gusts as high as 28 mph.

    High: 71 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 65. North northwest wind 6 to 10 mph.
Tonight
A chance of sprinkles after 1am. Partly cloudy, with a low around 42. North wind around 6 mph becoming calm in the evening.
Saturday
A chance of sprinkles before 11am, then a slight chance of showers after 11am. Mostly sunny, with a high near 62. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
A chance of sprinkles before 7pm. Mostly clear, with a low around 40. North northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 71. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Sunday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 55. South southwest wind around 10 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 80. Southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 58. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 71. South southwest wind 14 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 51. West southwest wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 67. Northwest wind 6 to 9 mph.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 44. Northwest wind 3 to 7 mph.
Thursday
Mostly sunny, with a high near 67. Northwest wind 5 to 13 mph, with gusts as high as 21 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:
6:01 am CDT May 1, 2026
Forecast Valid:
8am CDT May 1, 2026-6pm CDT May 7, 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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation