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.

Partly Cloudy

32°F

0°C

Humidity 66%
Wind Speed NE 7 mph
Barometer 29.96 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 2 Jan 9:55 pm CST
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 32. North northeast wind 3 to 5 mph.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 43. North northeast wind 3 to 6 mph.

    High: 43 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 41. Calm wind.

    High: 41 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. Calm wind becoming south around 5 mph after midnight.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 55. South southwest wind 5 to 10 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. South southwest wind around 7 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. Southwest wind 5 to 10 mph.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Light west wind.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 32. North northeast wind 3 to 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 43. North northeast wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 25. Calm wind.
Sunday
Increasing clouds, with a high near 41. Calm wind.
Sunday Night
Partly cloudy, with a low around 29. Calm wind becoming south around 5 mph after midnight.
Monday
Sunny, with a high near 55. South southwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 44. South southwest wind around 7 mph.
Tuesday
Partly sunny, with a high near 61. Southwest wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 43. Light west wind.
Wednesday
Mostly cloudy, with a high near 62. Calm wind becoming south around 5 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Calm wind becoming south around 6 mph after midnight.
Thursday
Showers likely. Mostly cloudy, with a high near 64. South wind 6 to 9 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 52. South southwest wind around 8 mph.
Friday
A chance of showers. Mostly sunny, with a high near 63. South southwest wind 8 to 11 mph, with gusts as high as 18 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:
8:27 pm CST Jan 2, 2026
Forecast Valid:
10pm CST Jan 2, 2026-6pm CST Jan 9, 2026
 
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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