Weather World
Agar, SD 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Agar, SD Weather Forecast
Agar, SD Weather Forecast Date: 641 PM CDT Sun Sep 06 2026
The area/counties/county of: Sully, including the city of Onida.or toggle through each period.
Tonight... Mostly clear this evening, then mostly cloudy with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 20%.
Labor Day... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Breezy, hot with highs in the lower 90s. Southeast winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 50%.
Monday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 60s. South winds 10 to 15 mph, becoming north after midnight. Gusts up to 30 mph.
Tuesday... Partly sunny. Less humid with highs in the lower 80s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Tuesday Night... Mostly clear. Cooler with lows in the mid 50s. Northwest winds around 10 mph, increasing to 15 to 20 mph after midnight.
Wednesday... Mostly clear. Highs in the upper 70s. Lows in the lower 50s.
Wednesday Night... Mostly clear. Highs in the upper 70s. Lows in the lower 50s.
Thursday... Mostly clear. Highs in the mid 80s. Lows in the upper 50s.
Friday... Mostly clear. Highs in the mid 80s. Lows in the upper 50s.
Friday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Saturday... Partly sunny with a 20% chance of showers. Not as warm with highs in the mid 70s.
Saturday Night... Mostly cloudy with a 40% chance of showers. Lows in the upper 40s.
POP = Probability of Precipitation
Agar Radar Loop
Use the map search tool if you want to place a location marker on the radar map...