Marvin, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marvin, a town in Grant County, South Dakota.
This Afternoon
47°F
Chance Light Rain
A chance of rain. Cloudy, with a high near 47. North northwest wind around 22 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Marvin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Chance Light Rain | 22 mph NNW | 54% |
| Tonight | 39°F | Light Rain | 20 to 23 mph NNW | 89% |
| Wednesday | 42°F | Light Rain | 20 to 24 mph NNW | 90% |
| Wednesday Night | 35°F | Chance Light Rain then Mostly Cloudy | 21 mph NNW | 35% |
| Thursday | 39°F | Partly Sunny | 12 to 20 mph N | 4% |
| Thursday Night | 31°F | Mostly Cloudy | 2 to 10 mph NNW | 0% |
| Friday | 42°F | Partly Sunny | 5 mph SW | 0% |
| Friday Night | 32°F | Partly Cloudy | 5 to 9 mph SW | 0% |
| Saturday | 53°F | Mostly Sunny | 9 to 14 mph WSW | 2% |
| Saturday Night | 37°F | Partly Cloudy | 13 mph W | 4% |
| Sunday | 55°F | Sunny | 10 mph WSW | 2% |
| Sunday Night | 40°F | Partly Cloudy | 8 to 15 mph SW | 0% |
| Monday | 56°F | Mostly Sunny | 10 to 16 mph WNW | 0% |
| Monday Night | 39°F | Mostly Clear | 7 to 10 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Marvin (45.261, -96.915). Updated through the day.
Growing snapshot for Marvin
Last spring frost
May 14
First fall frost
Sep 28
Growing season
136 days
Hardiness zone
4b
More local growing data for Marvin: nearby ZIP 57251 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Summit 1 W, Sd (6.5 mi from Marvin). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.