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

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Hazardous Weather Conditions

Current conditions at

Burlington Regional Airport (KBRL)

Lat: 40.77°NLon: 91.13°WElev: 679ft.

Rain Fog/Mist

67°F

19°C

Humidity 93%
Wind Speed N 3 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 65°F (18°C)
Visibility 2.50 mi
Last update 18 Sep 11:53 am CDT
Extended Forecast for

La Harpe IL

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 87. South wind around 5 mph. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Northeast wind around 5 mph becoming southwest in the evening. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. South wind around 5 mph becoming northeast in the morning. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 61. South wind around 5 mph becoming calm. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers. Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers. Partly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 87. South wind around 5 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Northeast wind around 5 mph becoming southwest in the evening. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. South wind around 5 mph becoming northeast in the morning. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 61. South wind around 5 mph becoming calm. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 64.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 80.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 80.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
La Harpe IL
 40.58°N 90.98°W (Elev. 673 ft)
Last Update:
10:00 am CDT Sep 18, 2025
Forecast Valid:
12pm CDT Sep 18, 2025-6pm CDT Sep 24, 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