Delmont, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Delmont, a city in Douglas County, South Dakota.
This Afternoon
49°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 49, with temperatures falling to around 44 in the afternoon. Northwest wind 20 to 25 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 Delmont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Chance Rain Showers | 20 to 25 mph NW | 50% |
| Tonight | 37°F | Chance Rain Showers | 15 to 20 mph NW | 39% |
| Wednesday | 46°F | Rain Showers Likely | 15 to 20 mph NW | 63% |
| Wednesday Night | 35°F | Chance Rain Showers then Mostly Cloudy | 15 mph NW | 40% |
| Thursday | 48°F | Partly Sunny | 10 to 15 mph NNW | 6% |
| Thursday Night | 29°F | Mostly Cloudy | 0 to 10 mph N | 0% |
| Friday | 48°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Friday Night | 31°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 59°F | Sunny | 5 to 10 mph W | 4% |
| Saturday Night | 35°F | Mostly Clear | 5 mph W | 3% |
| Sunday | 60°F | Sunny | 5 to 10 mph SW | 1% |
| Sunday Night | 40°F | Mostly Clear | 10 mph SSW | 0% |
| Monday | 61°F | Sunny | 10 to 15 mph WNW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph WNW | 0% |
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 Nov 4, 2026.