Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Light Rain Fog

66°F

19°C

Humidity 100%
Wind Speed Vrbl 2 mph
Barometer 30.26 in
Dewpoint 66°F (19°C)
Visibility 0.15 mi
Last update 16 Sep 9:15 am CDT
Extended Forecast for

Carthage IL

  • Today

    Today: Showers and thunderstorms likely before 1pm, then a chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Cloudy, with a high near 78. East wind around 5 mph.  Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 3am.  Mostly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 9am.  Mostly cloudy, with a high near 84. Northwest wind around 5 mph.

    High: 84 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am.  Mostly cloudy, with a low around 68. North wind around 5 mph becoming east after midnight.  Chance of precipitation is 30%.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers before 1pm.  Mostly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers before 1pm.  Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

    Low: 67 °F

    Showers
    Likely

  • Sunday

    Sunday: A 50 percent chance of showers.  Mostly cloudy, with a high near 79.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

Today
Showers and thunderstorms likely before 1pm, then a chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Cloudy, with a high near 78. East wind around 5 mph. Chance of precipitation is 60%.
Tonight
A 20 percent chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 9am. Mostly cloudy, with a high near 84. Northwest wind around 5 mph.
Thursday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 68. North wind around 5 mph becoming east after midnight. Chance of precipitation is 30%.
Friday
A 40 percent chance of showers before 1pm. Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 70.
Saturday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 88.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 79.
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. Mostly cloudy, with a high near 75.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 59.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Carthage IL
 40.41°N 91.13°W (Elev. 676 ft)
9:21 am CDT Sep 16, 2026
9am CDT Sep 16, 2026-6pm CDT Sep 22, 2026
 
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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