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Irwin, IA Weather Forecast
Irwin, IA Weather Forecast Date: 248 PM CDT Mon Oct 05 2026
The area/counties/county of: Shelby, including the city of Harlan.or toggle through each period.
Rest of Today... Sunny. Near steady temperature in the mid 70s. South winds around 10 mph.
Tonight... Mostly clear. Not as cool with lows in the mid 50s. South winds 5 to 10 mph with gusts up to 20 mph.
Tuesday... Sunny. Highs in the upper 70s. Southwest winds 10 to 15 mph.
Tuesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s. Southwest winds around 5 mph in the evening, becoming light and variable.
Wednesday... Mostly sunny. Highs in the mid 70s. North winds around 5 mph.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Thursday... Mostly sunny. Highs around 70.
Thursday Night... Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Lows in the lower 50s. Chance of rain 30%.
Friday... Mostly sunny. Highs in the lower 70s.
Friday Night... Mostly clear. Lows in the upper 50s.
Saturday... Sunny. Highs in the upper 70s.
Saturday Night... Mostly clear. Lows in the lower 60s.
POP = Probability of Precipitation
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