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.

Mostly Cloudy

55°F

13°C

Humidity 66%
Wind Speed N 10 mph
Barometer 29.94 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 15 Feb 3:55 pm CST
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a steady temperature around 51. North wind 7 to 9 mph.

    High: 51 °F

    Mostly Sunny

  • Tonight

    Tonight: Widespread fog, mainly after 5am. Otherwise, partly cloudy, with a low around 37. North wind around 6 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear
    then Fog

  • Washington's Birthday

    Washington's Birthday: Widespread dense fog, mainly before 8am. Otherwise, mostly sunny, with a high near 62. Calm wind becoming south southwest 5 to 8 mph in the morning.

    High: 62 °F

    Dense Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. South wind 3 to 6 mph.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. South wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 58. Breezy, with a south wind 14 to 21 mph, with gusts as high as 33 mph.

    Low: 58 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Southwest wind 10 to 18 mph, with gusts as high as 31 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South southwest wind 5 to 9 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73. South wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a steady temperature around 51. North wind 7 to 9 mph.
Tonight
Widespread fog, mainly after 5am. Otherwise, partly cloudy, with a low around 37. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Widespread dense fog, mainly before 8am. Otherwise, mostly sunny, with a high near 62. Calm wind becoming south southwest 5 to 8 mph in the morning.
Monday Night
Mostly cloudy, with a low around 42. South wind 3 to 6 mph.
Tuesday
Mostly cloudy, with a high near 65. South wind 6 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 58. Breezy, with a south wind 14 to 21 mph, with gusts as high as 33 mph.
Wednesday
Mostly sunny, with a high near 72. Southwest wind 10 to 18 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 53. South southwest wind 5 to 9 mph.
Thursday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73. South wind 5 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 45. West wind 7 to 10 mph.
Friday
A chance of showers. Partly sunny, with a high near 57. West northwest wind 7 to 9 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 36. North wind around 6 mph.
Saturday
A slight chance of showers. Mostly sunny, with a high near 51. North northwest wind 5 to 8 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:
3:57 pm CST Feb 15, 2026
Forecast Valid:
4pm CST Feb 15, 2026-6pm CST Feb 21, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation