Hazardous Weather Conditions
Current conditions at
Fort Madison Municipal Airport (KFSW)
Lat: 40.66°NLon: 91.33°WElev: 719ft.
Fair
81°F
27°C
| Humidity | 84% |
| Wind Speed | E 10 G 16 mph |
| Barometer | 30.03 in |
| Dewpoint | 75°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 87°F (31°C) |
| Last update | 14 Aug 12:55 pm CDT |
Extended Forecast for
Donnellson IA
Flood Watch August 14, 01:28pm until August 15, 10:00am
NOW until 10:00am Sat
Flood Watch
This Afternoon
High: 87 °F
Slight Chance
T-stormsTonight
Low: 73 °F
Chance
T-storms then
Showers
LikelySaturday
High: 92 °F
Chance
Showers then
Partly SunnySaturday Night
Low: 72 °F
Mostly Cloudy
then Chance
ShowersSunday
High: 86 °F
Chance
Showers then
Chance
T-stormsSunday Night
Low: 64 °F
Chance
T-storms then
Partly CloudyMonday
High: 83 °F
Sunny
Monday Night
Low: 64 °F
Mostly Clear
Detailed Forecast
This Afternoon
A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 87. Southeast wind around 5 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 73. East wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 40 percent chance of showers and thunderstorms, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 92. Heat index values as high as 106. Southeast wind 5 to 10 mph becoming west in the afternoon.
Saturday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Increasing clouds, with a low around 72. Northwest wind around 5 mph becoming south in the evening. Chance of precipitation is 50%.
Sunday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Sunday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Monday
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 80.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Donnellson IA
40.64°N 91.56°W (Elev. 705 ft)
40.64°N 91.56°W (Elev. 705 ft)
1:21 pm CDT Aug 14, 2026
1pm CDT Aug 14, 2026-6pm CDT Aug 20, 2026
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