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57542 Weather (Iona, SD)

Iona, SD WeatherCurrent Conditions and Weather for Iona, South Dakota
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Clear at Iona (57542), temperature is 57°F14°C, dew point 57°F14°C, humidity 99%. Wind direction is N at 0 mphat 0 km/h with visibility of 10 mi16 km. Barometric pressure is 30.24 in1024 mb. Last update: 12:17 am.*
*Time is approximately 12:17 am Thu, Sep 17, 2026. Time will be within 15 minutes of current local time. Iona weather forecast data is updated every 15 minutes.

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No one ever remembered a nice day. But no one ever forget the feel of paralyzed fish, the thud of walnut-sized hail against a horse's flank, or the way a superheated wind could turn your eyes to burlap. ―Erik Larson
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Iona SD Weather - 1:17 am

Iona Weather Forecast

Weather forecast for: Iona SD
Last Update: 11:21 pm CDT Sep 16, 2026
Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 57. Light south southeast wind.
Thursday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 72. East southeast wind 5 to 15 mph, with gusts as high as 24 mph.
Thursday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Some of the storms could produce heavy rainfall. Low around 61. Breezy, with an east wind 16 to 25 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Friday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 76. Breezy, with an east southeast wind 15 to 20 mph becoming west northwest in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 40%.
Friday Night: A slight chance of showers before 1am. Cloudy, with a low around 57. North northwest wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Saturday: Cloudy, with a high near 67. North wind 11 to 14 mph.
Saturday Night: A chance of showers, mainly after 1am. Mostly cloudy, with a low around 56. Northeast wind 9 to 11 mph. Chance of precipitation is 30%.
Sunday: A chance of showers. Cloudy, with a high near 65. Northeast wind around 10 mph. Chance of precipitation is 50%.
Sunday Night: A chance of showers. Mostly cloudy, with a low around 55. East northeast wind 8 to 10 mph. Chance of precipitation is 40%.
Monday: A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 67. Chance of precipitation is 30%.
Monday Night: A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Tuesday: Mostly sunny, with a high near 72.
Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 30%.
Wednesday: A slight chance of showers. Mostly sunny, with a high near 74. Chance of precipitation is 20%.

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