Delmont, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Delmont, a city in Douglas County, South Dakota.
Today
72°F
Slight Chance Rain Showers
Patchy smoke before 7am, then a slight chance of rain showers between 7am and 3pm. Mostly cloudy, with a high near 72. North northwest wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Delmont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Slight Chance Rain Showers | 5 to 10 mph NNW | 23% |
| Tonight | 54°F | Partly Cloudy | 0 to 5 mph WSW | 3% |
| Wednesday | 79°F | Mostly Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 57°F | Mostly Clear | 5 to 10 mph S | 0% |
| Thursday | 86°F | Sunny | 10 to 15 mph S | 7% |
| Thursday Night | 65°F | Mostly Clear | 10 to 15 mph S | 9% |
| Friday | 91°F | Sunny | 10 mph SSW | 6% |
| Friday Night | 66°F | Mostly Clear | 5 to 10 mph S | 9% |
| Saturday | 94°F | Sunny | 5 to 15 mph S | 4% |
| Saturday Night | 68°F | Mostly Clear | 10 to 15 mph SSE | 7% |
| Sunday | 92°F | Mostly Sunny | 10 to 15 mph SE | 3% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph E | 16% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 10 to 15 mph ENE | 16% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph ENE | 15% |
Forecast source: National Weather Service (api.weather.gov) for Delmont (43.267, -98.159). Updated through the day.
Growing snapshot for Delmont
Last spring frost
May 3
First fall frost
Oct 6
Growing season
157 days
Hardiness zone
5a
More local growing data for Delmont: nearby ZIP 57330 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Armour, Sd (10.2 mi from Delmont). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.