New Underwood, SD Weather & Growing Conditions
Overnight
49°F
Areas Of Smoke
Areas of smoke. Mostly clear, with a low around 49. Northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Areas Of Smoke | 5 mph NW | 1% |
| Tuesday | 75°F | Areas Of Smoke then Mostly Sunny | 6 mph W | 2% |
| Tuesday Night | 55°F | Partly Cloudy | 5 to 10 mph S | 11% |
| Wednesday | 85°F | Sunny | 3 to 8 mph SW | 2% |
| Wednesday Night | 59°F | Mostly Clear | 6 to 9 mph S | 3% |
| Thursday | 93°F | Sunny | 5 to 9 mph NW | 0% |
| Thursday Night | 62°F | Mostly Clear | 6 to 9 mph S | 1% |
| Friday | 97°F | Sunny | 6 to 15 mph N | 0% |
| Friday Night | 65°F | Mostly Clear | 8 to 15 mph S | 1% |
| Saturday | 99°F | Sunny | 10 to 16 mph NW | 0% |
| Saturday Night | 64°F | Mostly Clear | 7 to 16 mph N | 3% |
| Sunday | 97°F | Mostly Sunny | 7 to 22 mph E | 9% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 8 to 22 mph NE | 25% |
| Monday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 to 20 mph NE | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Underwood, SD
Last spring frost
May 8
First fall frost
Oct 3
Growing season
146 days
Hardiness zone
5a
Explore more for New Underwood, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Elm Springs 3 Ese, Sd (16.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.