Weather World
Cass School, SD 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Cass School, SD Weather Forecast
Cass School, SD Weather Forecast Date: 1222 PM CDT Tue Sep 08 2026
The area/counties/county of: Sully, including the city of Onida.or toggle through each period.
This Afternoon... Mostly sunny. Highs in the lower 80s. Northwest winds 10 to 15 mph with gusts up to 30 mph.
Tonight... Mostly clear. Lows in the mid 50s. Northwest winds 10 to 15 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. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming south after midnight.
Thursday... Sunny, warmer with highs in the upper 80s. South winds 10 to 15 mph with gusts up to 25 mph.
Thursday Night... Mostly clear. Hot. Lows around 60. Highs around 90.
Friday... Mostly clear. Hot. Lows around 60. Highs around 90.
Friday Night... Mostly clear and breezy. Lows in the lower 50s.
Saturday... Partly sunny. Not as warm with highs in the lower 70s.
Saturday Night... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the upper 40s. Highs in the mid 60s. Chance of rain 50%.
Sunday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the upper 40s. Highs in the mid 60s. Chance of rain 50%.
POP = Probability of Precipitation
Cass School Radar Loop
Use the map search tool if you want to place a location marker on the radar map...