Extreme Heat and Severe Thunderstorms Today

Extreme heat continues today from the central Plains to the lower Mississippi River Valley, over southeast Montana, and from southern California into the Southwest Deserts. Extreme Heat Warnings remain in effect. Severe thunderstorms capable of strong to severe wind gusts and large hail are possible across the Great Lakes into the Ohio Valley today into tonight. Read More >

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

90°F

32°C

Humidity 71%
Wind Speed S 15 G 18 mph
Barometer 29.77 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 27 Jul 12:15 pm CDT
Extended Forecast for

3 Miles S Denmark IA

Extreme Heat Warning July 27, 12:49pm until July 27, 10:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 27, 12:49pm until July 27, 10:00pm

    NOW until 10:00pm Mon

    Extreme Heat Warning

  • This Afternoon

    High: 96 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Patchy smoke between 11pm and 4am. Partly cloudy, with a low around 73. West wind around 5 mph becoming north after midnight.

    Low: 73 °F

    Chance
    T-storms then
    Patchy Smoke

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86. Northeast wind 5 to 10 mph.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 96. Heat index values as high as 113. Southwest wind around 10 mph. Chance of precipitation is 30%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Patchy smoke between 11pm and 4am. Partly cloudy, with a low around 73. West wind around 5 mph becoming north after midnight.
Tuesday
Mostly sunny, with a high near 86. Northeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 66. Northeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68.
Friday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Denmark IA
 40.7°N 91.32°W (Elev. 682 ft)
11:02 am CDT Jul 27, 2026
12pm CDT Jul 27, 2026-6pm CDT Aug 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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