Agar, SD Weather & Growing Conditions
Today
48°F
Mostly Cloudy
Mostly cloudy, with a high near 48. Northwest wind 16 to 21 mph, with gusts as high as 31 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 48°F | Mostly Cloudy | 16 to 21 mph NW | 1% |
| Tonight | 32°F | Mostly Cloudy then Patchy Fog | 12 to 16 mph NNW | 1% |
| Thursday | 46°F | Patchy Fog then Mostly Sunny | 6 to 12 mph N | 0% |
| Thursday Night | 25°F | Partly Cloudy | 7 mph E | 0% |
| Friday | 47°F | Mostly Sunny | 5 to 8 mph SE | 0% |
| Friday Night | 29°F | Partly Cloudy | 6 mph S | 0% |
| Saturday | 58°F | Sunny | 6 to 14 mph WSW | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 to 9 mph W | 0% |
| Sunday | 59°F | Sunny | 5 to 12 mph SSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 9 mph SW | 0% |
| Monday | 60°F | Mostly Sunny | 8 to 14 mph NW | 0% |
| Monday Night | 34°F | Partly Cloudy | 7 mph NW | 0% |
| Tuesday | 57°F | Mostly Sunny | 6 to 9 mph SSW | 1% |
| Tuesday Night | 36°F | Partly Cloudy | 7 mph SE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Agar, SD
Last spring frost
May 8
First fall frost
Oct 2
Growing season
147 days
Hardiness zone
4b
Explore more for Agar, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Onida 4 Nw, Sd (8.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.