Delmont, SD Weather & Growing Conditions
Tonight
37°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 37, with temperatures rising to around 40 overnight. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 37°F | Chance Rain Showers | 15 to 20 mph NW | 29% |
| Wednesday | 46°F | Rain Showers Likely | 15 to 20 mph NW | 63% |
| Wednesday Night | 35°F | Chance Rain Showers then Mostly Cloudy | 10 to 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% |
| Tuesday | 59°F | Mostly Sunny | 5 to 10 mph SSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Delmont, SD
Last spring frost
May 3
First fall frost
Oct 6
Growing season
157 days
Hardiness zone
5a
Explore more for Delmont, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Armour, Sd (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.