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	County Forecast for Fort Atkinson , IA

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170300-
Winneshiek-
Including the city of Decorah
241 PM CDT Wed Sep 16 2026

Tonight   Mostly cloudy. A slight chance of showers this evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows around 60. East winds around 5 mph. Chance of rain 50 percent.
Thursday   Mostly cloudy. A chance of showers in the morning. Highs in the lower 70s. Light winds. Chance of rain 40 percent.
Thursday night   Mostly cloudy. Lows in the upper 50s. Light winds.
Friday   Showers in the morning, then showers and a chance of thunderstorms in the afternoon. Highs in the lower 70s. Southeast winds 10 to 15 mph. Chance of rain 90 percent.
Friday night   Showers and a chance of thunderstorms. Lows in the mid 60s. Southeast winds 10 to 15 mph. Chance of rain 100 percent.
Saturday   Showers likely. Highs in the mid 70s. Chance of rain 60 percent.
Saturday night   Mostly cloudy with a chance of showers. Lows in the upper 50s. Chance of rain 40 percent.
Sunday   Cooler. Cloudy with a 50 percent chance of showers. Highs in the mid 60s.
Sunday night   Mostly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 50 percent.
Monday and monday night   Mostly cloudy with a 50 percent chance of showers. Highs in the lower 60s. Lows in the lower 50s.
Tuesday and tuesday night   Mostly cloudy. Highs in the mid 60s. Lows in the lower 50s.
Wednesday   Mostly sunny. Highs around 70.

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Bryce Anderson – DTN Meteorologist

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Rain and Storms from the Dakotas to Ohio Tonight

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Posted at 11:55AM Wed Sep 16, 2026 CDT

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