Summit, SD Weather & Growing Conditions
Tonight
37°F
Light Rain
Rain and areas of fog. Cloudy. Low around 37, with temperatures rising to around 40 overnight. North northwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 37°F | Light Rain | 16 to 20 mph NNW | 89% |
| Wednesday | 41°F | Light Rain | 21 mph NNW | 88% |
| Wednesday Night | 33°F | Chance Light Rain then Patchy Fog | 15 to 18 mph NNW | 30% |
| Thursday | 38°F | Patchy Fog then Partly Sunny | 12 to 16 mph N | 3% |
| Thursday Night | 29°F | Mostly Cloudy | 2 to 10 mph NE | 1% |
| Friday | 42°F | Partly Sunny | 2 to 6 mph SSW | 0% |
| Friday Night | 31°F | Partly Cloudy | 5 to 8 mph SW | 0% |
| Saturday | 52°F | Mostly Sunny | 8 to 14 mph WSW | 2% |
| Saturday Night | 35°F | Partly Cloudy | 12 mph WNW | 4% |
| Sunday | 54°F | Sunny | 10 mph WSW | 2% |
| Sunday Night | 39°F | Partly Cloudy | 8 to 13 mph SW | 0% |
| Monday | 55°F | Mostly Sunny | 13 to 17 mph WNW | 0% |
| Monday Night | 37°F | Mostly Clear | 7 to 10 mph WNW | 0% |
| Tuesday | 51°F | Mostly Sunny | 9 mph W | 0% |
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 Nov 4, 2026.