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.

Fog/Mist

48°F

9°C

Humidity 94%
Wind Speed SW 7 mph
Barometer 29.96 in
Dewpoint 47°F (8°C)
Visibility 3.00 mi
Wind Chill45°F (7°C)
Last update 10 Feb 7:35 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: A 20 percent chance of showers after 3pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 67. South southwest wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 67 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 9pm. Mostly cloudy, with a low around 31. North wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 31 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 48. North wind 3 to 5 mph.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 29. Calm wind.

    Low: 29 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 47. Light east southeast wind.

    High: 47 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 34. Light east wind.

    Low: 34 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 51. Calm wind becoming east around 5 mph.

    High: 51 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Calm wind becoming east around 6 mph after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain. Cloudy, with a high near 51. East wind 6 to 9 mph.

    High: 51 °F

    Chance Rain

Detailed Forecast

Today
A 20 percent chance of showers after 3pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 67. South southwest wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
A 20 percent chance of showers before 9pm. Mostly cloudy, with a low around 31. North wind 6 to 9 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 48. North wind 3 to 5 mph.
Wednesday Night
Increasing clouds, with a low around 29. Calm wind.
Thursday
Mostly cloudy, with a high near 47. Light east southeast wind.
Thursday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 34. Light east wind.
Friday
Partly sunny, with a high near 51. Calm wind becoming east around 5 mph.
Friday Night
Mostly cloudy, with a low around 36. Calm wind becoming east around 6 mph after midnight.
Saturday
A chance of rain. Cloudy, with a high near 51. East wind 6 to 9 mph.
Saturday Night
Rain. Cloudy, with a low around 42. East northeast wind around 10 mph, with gusts as high as 18 mph.
Sunday
A chance of rain. Mostly cloudy, with a high near 53. Northeast wind 7 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 36. North northwest wind around 6 mph becoming calm in the evening.
Washington's Birthday
Sunny, with a high near 58. Calm wind becoming south southeast around 5 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:
4:52 am CST Feb 10, 2026
Forecast Valid:
7am CST Feb 10, 2026-6pm CST Feb 16, 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