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Iona, SD Weather Forecast
Iona, SD Weather Forecast Date: 821 AM CDT Tue Sep 08 2026
The area/counties/county of: Lyman, including the city of Kennebec.or toggle through each period.
Today... Partly sunny. Highs in the mid 80s. Northwest winds 15 to 20 mph with gusts up to 35 mph.
Tonight... Mostly clear. Lows in the upper 50s. Northwest winds 5 to 10 mph.
Wednesday... Mostly sunny. Highs in the upper 70s. Northwest winds 15 to 20 mph with gusts up to 30 mph.
Wednesday Night... Mostly clear. Lows in the lower 50s. West winds 5 to 10 mph with gusts up to 20 mph, becoming south after midnight.
Thursday... Sunny, warmer with highs around 90. South winds 15 to 20 mph. Gusts up to 35 mph in the afternoon.
Thursday Night... Mostly clear and breezy. Lows in the mid 60s. Highs in the upper 80s.
Friday... Mostly clear and breezy. Lows in the mid 60s. Highs in the upper 80s.
Friday Night... Mostly clear and breezy, cooler with lows in the mid 50s.
Saturday... Partly sunny. Not as warm with highs in the mid 70s.
Saturday Night... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 50s. Highs in the lower 70s. Chance of rain 50%.
Sunday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 50s. Highs in the lower 70s. Chance of rain 50%.
POP = Probability of Precipitation
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