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St. Onge, SD Weather Forecast
St. Onge, SD Weather Forecast Date: 247 AM MDT Sun Sep 27 2026
The area/counties/county of: Northern Foothills, including the cities of: Spearfish, Whitewood, and Saint Onge.or toggle through each period.
Early This Morning... Partly cloudy. Near steady temperature in the upper 40s. Northwest winds around 5 mph.
Today... Partly cloudy with a 20% chance of showers. Breezy with highs in the upper 60s. East winds 5 to 10 mph with gusts up to 20 mph, increasing to 15 to 25 mph with gusts up to 35 mph in the afternoon.
Tonight... Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely after midnight. Breezy with lows in the mid 50s. Southeast winds 15 to 25 mph, diminishing to 10 to 15 mph after midnight. Gusts up to 35 mph. Chance of rain 60%.
Monday... Mostly cloudy in the morning, then partly cloudy with showers likely with a slight chance of thunderstorms in the afternoon. Highs in the mid 70s. West winds 5 to 10 mph. Gusts up to 20 mph in the morning. Chance of rain 70%.
Monday Night... Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 50s. West winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50%.
Tuesday... Partly cloudy in the morning, then clearing. Highs in the lower 70s. West winds 5 to 10 mph, becoming northeast in the afternoon.
Tuesday Night... Mostly clear. Lows in the lower 50s.
Wednesday... Sunny. Highs in the lower 70s.
Wednesday Night... Mostly clear. Lows in the upper 40s.
Thursday... Mostly sunny. Highs in the upper 60s.
Thursday Night... Clear. Lows around 50.
Friday... Mostly sunny. Highs in the lower 70s.
Friday Night... Partly cloudy. Lows in the lower 50s.
POP = Probability of Precipitation
St. Onge Radar Loop
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