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.
Today
77°F
Sunny
Sunny, with a high near 77. Northwest wind 7 to 13 mph, with gusts as high as 22 mph.
7-day forecast for Mound City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 7 to 13 mph NW | 0% |
| Tonight | 52°F | Partly Cloudy | 3 to 10 mph SSW | 0% |
| Wednesday | 85°F | Sunny | 3 to 12 mph SW | 0% |
| Wednesday Night | 58°F | Partly Cloudy | 10 mph SSW | 2% |
| Thursday | 90°F | Mostly Sunny | 10 mph WSW | 1% |
| Thursday Night | 60°F | Mostly Clear | 6 to 10 mph ENE | 1% |
| Friday | 91°F | Sunny | 7 to 14 mph NW | 1% |
| Friday Night | 60°F | Mostly Clear | 12 mph ESE | 1% |
| Saturday | 93°F | Mostly Sunny | 12 to 16 mph E | 2% |
| Saturday Night | 60°F | Mostly Clear | 10 to 15 mph ENE | 5% |
| Sunday | 90°F | Mostly Sunny | 10 to 18 mph ENE | 8% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 13 to 17 mph E | 31% |
| Monday | 87°F | Slight Chance Showers And Thunderstorms | 14 to 18 mph ENE | 29% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 13 to 17 mph ENE | 25% |
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 Aug 4, 2026.