Hazardous Weather Conditions
Current conditions at
Fort Madison Municipal Airport (KFSW)
Lat: 40.66°NLon: 91.33°WElev: 719ft.
A Few Clouds
79°F
26°C
| Humidity | 65% |
| Wind Speed | S 20 G 28 mph |
| Barometer | 29.75 in |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 17 Apr 11:35 am CDT |
Extended Forecast for
4 Miles WNW Donnellson IA
Today
High: 83 °F
T-storms
Likely and
BreezyTonight
Low: 40 °F
T-storms and
Breezy then
Chance
ShowersSaturday
High: 53 °F
Sunny
Saturday Night
Low: 34 °F
Clear then
Areas FrostSunday
High: 60 °F
Frost then
SunnySunday Night
Low: 37 °F
Mostly Clear
Monday
High: 66 °F
Areas Frost
then SunnyMonday Night
Low: 52 °F
Mostly Clear
Tuesday
High: 76 °F
Mostly Sunny
Detailed Forecast
Today
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then showers and thunderstorms likely after 4pm. Partly sunny, with a high near 83. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms before 10pm, then a chance of showers. Low around 40. Breezy, with a south wind 10 to 20 mph becoming north in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Sunny, with a high near 53. Northwest wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. West wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 37.
Monday
Areas of frost before 7am. Otherwise, sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles WNW Donnellson IA
40.66°N 91.64°W (Elev. 699 ft)
40.66°N 91.64°W (Elev. 699 ft)
10:21 am CDT Apr 17, 2026
11am CDT Apr 17, 2026-6pm CDT Apr 23, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
