National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

A cold front pressing east across the central U.S. will be the focus for areas of strong to severe thunderstorms and excessive rainfall through this weekend. Strong to severe thunderstorms my bring damaging winds, hail, and a few tornadoes while excessive rainfall may lead to areas of flooding. Heat will build across the western U.S. with heat-related watches, warnings, and advisories issued. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Partly Cloudy

89°F

32°C

Humidity 60%
Wind Speed S 13 mph
Barometer 30.02 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 13 Jul 1:15 pm CDT
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 86. Southwest wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.

    High: 86 °F

    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Patchy fog after 11pm. Low around 71. Calm wind. Chance of precipitation is 80%.

    Low: 71 °F

    Showers and
    Patchy Fog
    then Chance
    T-storms and
    Patchy Fog

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 88. Light west wind.

    High: 88 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 90 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Light south southwest wind.

    Low: 73 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Southwest wind 3 to 7 mph.

    High: 92 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. Southwest wind 3 to 6 mph.

    Low: 74 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Southwest wind 3 to 7 mph.

    High: 92 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 86. Southwest wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Tonight
Showers and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Patchy fog after 11pm. Low around 71. Calm wind. Chance of precipitation is 80%.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 88. Light west wind.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. Calm wind becoming south southwest around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Light south southwest wind.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Southwest wind 3 to 7 mph.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. Southwest wind 3 to 6 mph.
Thursday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Southwest wind 3 to 7 mph.
Thursday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 72. West wind around 5 mph becoming calm in the evening.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Light and variable wind becoming south around 6 mph in the morning.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Light and variable wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.72°N 88.55°W
Last Update:
11:47 am CDT Jul 13, 2025
Forecast Valid:
1pm CDT Jul 13, 2025-6pm CDT Jul 19, 2025
 
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