Agar, SD Weather & Growing Conditions
This Afternoon
66°F
Cloudy
Cloudy, with a high near 66. Northeast wind around 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Cloudy | 12 mph NE | 6% |
| Tonight | 57°F | Cloudy then Chance Rain Showers | 12 mph ENE | 31% |
| Sunday | 60°F | Rain Showers | 12 to 16 mph ENE | 75% |
| Sunday Night | 49°F | Rain Showers Likely | 9 to 13 mph ENE | 72% |
| Monday | 61°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph E | 24% |
| Monday Night | 44°F | Partly Cloudy | 10 mph SE | 4% |
| Tuesday | 64°F | Mostly Sunny | 9 to 20 mph SE | 1% |
| Tuesday Night | 50°F | Partly Cloudy | 20 mph SE | 6% |
| Wednesday | 68°F | Partly Sunny then Slight Chance Rain Showers | 23 mph SE | 16% |
| Wednesday Night | 53°F | Showers And Thunderstorms Likely | 15 to 23 mph SE | 58% |
| Thursday | 74°F | Chance Showers And Thunderstorms then Partly Sunny | 9 to 14 mph SE | 35% |
| Thursday Night | 54°F | Partly Cloudy | 9 mph ESE | 9% |
| Friday | 75°F | Partly Sunny | 9 to 18 mph SE | 7% |
| Friday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 18 mph SE | 21% |
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 Sep 19, 2026.