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

74°F

23°C

Humidity 93%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 8 Aug 2:55 am CDT
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 92 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 93 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. South wind 3 to 6 mph.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95. South southwest wind 5 to 10 mph.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southwest wind 6 to 8 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Southwest wind 8 to 11 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. South southwest wind 7 to 9 mph.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 71. Calm wind.
Saturday
A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 71. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 72. South wind 3 to 6 mph.
Monday
Sunny, with a high near 95. South southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 76. South southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 95. Southwest wind 8 to 11 mph.
Tuesday Night
Mostly clear, with a low around 75. South southwest wind 7 to 9 mph.
Wednesday
A chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 93. Southwest wind 8 to 10 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 6 to 9 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Southwest wind 5 to 7 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. West wind around 5 mph becoming light and variable.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Southwest wind 3 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
1:46 am CDT Aug 8, 2026
Forecast Valid:
3am CDT Aug 8, 2026-6pm CDT Aug 14, 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