Agar, SD Weather & Growing Conditions
Today
74°F
Patchy Smoke then Sunny
Patchy smoke before 10am. Sunny, with a high near 74. West northwest wind 2 to 12 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Smoke then Sunny | 2 to 12 mph WNW | 0% |
| Tonight | 54°F | Mostly Clear | 6 to 9 mph SSW | 0% |
| Wednesday | 82°F | Mostly Sunny | 6 to 12 mph SSW | 0% |
| Wednesday Night | 59°F | Partly Cloudy | 8 to 12 mph S | 3% |
| Thursday | 89°F | Sunny | 10 mph SSW | 3% |
| Thursday Night | 62°F | Mostly Clear | 9 mph SSW | 3% |
| Friday | 91°F | Sunny | 7 to 12 mph N | 1% |
| Friday Night | 62°F | Mostly Clear | 12 mph E | 1% |
| Saturday | 93°F | Sunny | 13 to 16 mph E | 2% |
| Saturday Night | 63°F | Mostly Clear | 10 to 14 mph E | 4% |
| Sunday | 90°F | Mostly Sunny | 10 to 17 mph ENE | 4% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 13 to 17 mph E | 34% |
| Monday | 87°F | Chance Showers And Thunderstorms then Partly Sunny | 16 mph ENE | 34% |
| Monday Night | 62°F | Slight Chance Showers And Thunderstorms | 13 to 16 mph ENE | 25% |
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 Aug 4, 2026.