Mound City, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mound City, a town in Campbell County, South Dakota.
This Afternoon
47°F
Mostly Cloudy
Mostly cloudy. High near 47, with temperatures falling to around 43 in the afternoon. North northwest wind 17 to 22 mph, with gusts as high as 37 mph.
7-day forecast for Mound City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Mostly Cloudy | 17 to 22 mph NNW | 0% |
| Tonight | 28°F | Mostly Cloudy | 9 to 15 mph NNW | 0% |
| Wednesday | 48°F | Mostly Cloudy | 13 to 18 mph NNW | 1% |
| Wednesday Night | 27°F | Mostly Cloudy | 8 to 14 mph NNW | 0% |
| Thursday | 46°F | Mostly Sunny | 6 to 9 mph N | 0% |
| Thursday Night | 22°F | Partly Cloudy | 5 mph ESE | 0% |
| Friday | 48°F | Mostly Sunny | 3 to 8 mph SSW | 0% |
| Friday Night | 26°F | Partly Cloudy | 6 mph SW | 0% |
| Saturday | 58°F | Mostly Sunny | 5 to 16 mph W | 4% |
| Saturday Night | 29°F | Mostly Clear | 3 to 9 mph W | 1% |
| Sunday | 59°F | Sunny | 3 to 10 mph SSW | 0% |
| Sunday Night | 34°F | Mostly Clear | 9 mph SW | 0% |
| Monday | 59°F | Mostly Sunny | 9 to 17 mph WNW | 0% |
| Monday Night | 30°F | Partly Cloudy | 3 to 8 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mound City (45.726, -100.069). Updated through the day.
Growing snapshot for Mound City
Last spring frost
May 8
First fall frost
Oct 1
Growing season
145 days
Hardiness zone
4b
More local growing data for Mound City: nearby ZIP 57646 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Selby, Sd (11.8 mi from Mound City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.