Summit, SD Weather & Growing Conditions
Tonight
54°F
Areas Of Drizzle
Areas of drizzle and areas of fog before 1am, then areas of fog and patchy drizzle. Cloudy. Low around 54, with temperatures rising to around 58 overnight. East northeast wind 8 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Areas Of Drizzle | 8 to 12 mph ENE | 33% |
| Saturday | 62°F | Areas Of Fog | 13 mph NE | 14% |
| Saturday Night | 52°F | Mostly Cloudy | 8 to 12 mph NE | 12% |
| Sunday | 63°F | Mostly Cloudy | 10 to 14 mph ENE | 11% |
| Sunday Night | 49°F | Chance Rain Showers | 7 to 12 mph E | 37% |
| Monday | 60°F | Chance Rain Showers | 10 mph E | 37% |
| Monday Night | 46°F | Mostly Cloudy | 8 mph ESE | 5% |
| Tuesday | 62°F | Mostly Sunny | 6 to 12 mph SE | 1% |
| Tuesday Night | 48°F | Partly Cloudy | 10 mph SE | 6% |
| Wednesday | 65°F | Partly Sunny | 9 to 14 mph SSE | 10% |
| Wednesday Night | 52°F | Chance Rain Showers | 10 mph SSE | 27% |
| Thursday | 68°F | Chance Rain Showers then Partly Sunny | 9 mph S | 27% |
| Thursday Night | 54°F | Partly Cloudy | 8 mph SSE | 11% |
| Friday | 70°F | Partly Sunny | 8 to 13 mph SSE | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Summit, SD
Last spring frost
May 14
First fall frost
Sep 28
Growing season
136 days
Hardiness zone
4a
Explore more for Summit, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Summit 1 W, Sd (1.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.