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

65°F

18°C

Humidity 91%
Wind Speed SW 5 mph
Barometer 29.94 in
Dewpoint 63°F (17°C)
Visibility 7.00 mi
Last update 10 Mar 5:35 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: Mostly cloudy, with a high near 79. South southwest wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 79 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 66 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 4pm, then showers likely. Temperature rising to near 72 by 11am, then falling to around 56 during the remainder of the day. Breezy, with a southwest wind 16 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%.

    High: 72 °F⇓

    Breezy.
    Showers
    Likely then
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 7pm. Mostly cloudy, with a low around 36. North northwest wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    Low: 36 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 55. North northwest wind around 6 mph becoming west in the afternoon.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. Light south wind becoming south southwest 11 to 16 mph in the evening. Winds could gust as high as 28 mph.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 64. South southwest wind 10 to 17 mph, with gusts as high as 29 mph.

    High: 64 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. West wind around 5 mph becoming light and variable.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 69. East southeast wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 21 mph.

    High: 69 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 79. South southwest wind 8 to 16 mph, with gusts as high as 25 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Wednesday
Showers and possibly a thunderstorm before 4pm, then showers likely. Temperature rising to near 72 by 11am, then falling to around 56 during the remainder of the day. Breezy, with a southwest wind 16 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%.
Wednesday Night
Showers likely, mainly before 7pm. Mostly cloudy, with a low around 36. North northwest wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Thursday
Sunny, with a high near 55. North northwest wind around 6 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 41. Light south wind becoming south southwest 11 to 16 mph in the evening. Winds could gust as high as 28 mph.
Friday
Partly sunny, with a high near 64. South southwest wind 10 to 17 mph, with gusts as high as 29 mph.
Friday Night
Partly cloudy, with a low around 41. West wind around 5 mph becoming light and variable.
Saturday
Sunny, with a high near 69. East southeast wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 55. South southwest wind 9 to 14 mph, with gusts as high as 25 mph.
Sunday
Showers and thunderstorms likely. Mostly cloudy, with a high near 68. Breezy, with a south southwest wind 15 to 21 mph becoming west northwest in the afternoon. Winds could gust as high as 32 mph.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 27. Northwest wind 15 to 18 mph, with gusts as high as 26 mph.
Monday
A slight chance of snow showers. Mostly sunny, with a high near 40. Northwest wind around 14 mph, with gusts as high as 22 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:
4:36 am CDT Mar 10, 2026
Forecast Valid:
5am CDT Mar 10, 2026-6pm CDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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