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

46°F

8°C

Humidity 77%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 16 Feb 8:35 pm CST
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 41. South wind 3 to 6 mph.

    Low: 41 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 60. South southwest wind 5 to 15 mph, with gusts as high as 28 mph.

    High: 60 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 58. Breezy, with a south wind 13 to 20 mph, with gusts as high as 32 mph.

    Low: 58 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: Partly sunny, with a high near 72. Southwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 55. South southwest wind around 6 mph.

    Low: 55 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 72. South wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    High: 72 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers before midnight. Partly cloudy, with a low around 43. West wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 43 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 55. West wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 55 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers. Partly cloudy, with a low around 35. West wind around 5 mph becoming light and variable in the evening.

    Low: 35 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 41. South wind 3 to 6 mph.
Tuesday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 60. South southwest wind 5 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 58. Breezy, with a south wind 13 to 20 mph, with gusts as high as 32 mph.
Wednesday
Partly sunny, with a high near 72. Southwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 55. South southwest wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 72. South wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Thursday Night
A 40 percent chance of showers before midnight. Partly cloudy, with a low around 43. West wind 9 to 11 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 55. West wind 6 to 11 mph, with gusts as high as 20 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 35. West wind around 5 mph becoming light and variable in the evening.
Saturday
A slight chance of showers after noon. Mostly sunny, with a high near 51. North wind 3 to 7 mph.
Saturday Night
A chance of showers. Partly cloudy, with a low around 30. North northwest wind around 6 mph.
Sunday
Sunny, with a high near 44. Northwest wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 23. North northwest wind around 6 mph.
Monday
Mostly sunny, with a high near 43. North northwest wind around 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
5:12 pm CST Feb 16, 2026
Forecast Valid:
8pm CST Feb 16, 2026-6pm CST Feb 23, 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