Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Thunderstorm in Vicinity Rain Fog/Mist

64°F

18°C

Humidity 94%
Wind Speed Vrbl 7 mph
Barometer 29.91 in
Dewpoint 63°F (17°C)
Visibility 5.00 mi
Last update 19 May 12:55 am CDT
Extended Forecast for

2 Miles ESE Franklin IA

Severe T-storm Watch May 19, 01:26am until May 19, 04:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch May 19, 01:26am until May 19, 04:00am

    NOW until 4:00am Tue

    Severe T-storm Watch

  • Overnight

    Low: 64 °F

    Severe
    Thunderstorms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am.  Mostly cloudy, with a high near 68. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 50%.

    High: 68 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47. North wind around 10 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. Northeast wind around 10 mph.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 1am.  Cloudy, with a low around 52.

    Low: 52 °F

    Cloudy then
    Chance
    Showers

  • Friday

    Friday: Showers likely.  Mostly cloudy, with a high near 66. Chance of precipitation is 70%.

    High: 66 °F

    Showers
    Likely

Detailed Forecast

Overnight
Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Some of the storms could be severe. Low around 64. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Mostly cloudy, with a high near 68. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Tuesday Night
Mostly cloudy, with a low around 47. North wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 67. Northeast wind around 10 mph.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Partly sunny, with a high near 69.
Thursday Night
A 50 percent chance of showers after 1am. Cloudy, with a low around 52.
Friday
Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Friday Night
Mostly cloudy, with a low around 52.
Saturday
Partly sunny, with a high near 76.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 60.
Memorial Day
Partly sunny, with a high near 87.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Franklin IA
 40.66°N 91.47°W (Elev. 551 ft)
11:51 pm CDT May 18, 2026
1am CDT May 19, 2026-6pm CDT May 25, 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