Weather WorldErwin, SD 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Erwin, SD Weather Forecast
Erwin, SD Weather Forecast Date: 649 PM CDT Wed Sep 09 2026
The area/counties/county of: Kingsbury, including the cities of: De Smet, Arlington, and Lake Preston.or toggle through each period.
Tonight... Mostly clear. Lows in the lower 50s. West winds 5 to 10 mph, becoming south after midnight.
Thursday... Sunny. Highs in the lower 80s. South winds 5 to 10 mph with gusts up to 20 mph, increasing to 15 to 20 mph with gusts up to 30 mph in the afternoon.
Thursday Night... Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the mid 60s. South winds 15 to 20 mph with gusts up to 30 mph.
Friday... Mostly sunny and breezy. Highs in the upper 80s. South winds 20 to 25 mph with gusts up to 40 mph.
Friday Night... Mostly clear in the evening, then becoming partly cloudy. Breezy, cooler with lows in the mid 50s. West winds 15 to 25 mph with gusts up to 35 mph, becoming north 10 to 15 mph with gusts up to 25 mph after midnight.
Saturday... Mostly sunny. Not as warm with highs in the lower 70s.
Saturday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s.
Sunday... A chance of thunderstorms. Showers likely, mainly in the morning. Highs in the mid 60s. Chance of rain 70%.
Sunday Night... Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers after midnight. Lows in the mid 50s. Chance of rain 80%.
Monday... Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs around 70. Chance of rain 40%.
Monday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 40s.
Tuesday... Mostly sunny. Highs in the upper 60s.
Tuesday Night... Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 50s. Chance of rain 30%.
POP = Probability of Precipitation
Erwin Radar Loop
Use the map search tool if you want to place a location marker on the radar map...