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August / Summer'25 Climate Summary

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

63°F

17°C

Humidity	83%
Wind Speed	S 3 mph
Barometer	29.99 in
Dewpoint	57°F (14°C)
Visibility	10.00 mi
Last update	2 Sep 9:15 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles SSW Denmark IA

Tonight
Low: 58 °F
Mostly Clear
Wednesday
High: 75 °F
Chance
Showers then
Showers
Likely
Wednesday Night
Low: 45 °F
Showers
Likely then
Slight Chance
Showers
Thursday
High: 71 °F
Sunny
Thursday Night
Low: 55 °F
Partly Cloudy
Friday
High: 68 °F
Sunny
Friday Night
Low: 45 °F
Mostly Clear
Saturday
High: 72 °F
Sunny
Saturday Night
Low: 47 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly clear, with a low around 58. Calm wind becoming southwest around 5 mph after midnight.

Wednesday

A chance of showers before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 75. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday Night

Showers likely, mainly before 7pm. Partly cloudy, with a low around 45. Northwest wind 5 to 10 mph. Chance of precipitation is 60%.

Thursday

Sunny, with a high near 71. Northwest wind around 5 mph becoming west in the afternoon.

Thursday Night

Partly cloudy, with a low around 55.

Friday

Sunny, with a high near 68.

Friday Night

Mostly clear, with a low around 45.

Saturday

Sunny, with a high near 72.