Green Valley, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Green Valley, a community in Pennington County, South Dakota.
Today
75°F
Areas Of Smoke then Mostly Sunny
Areas of smoke before noon. Mostly sunny, with a high near 75. Northeast wind 2 to 8 mph, with gusts as high as 21 mph.
7-day forecast for Green Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Areas Of Smoke then Mostly Sunny | 2 to 8 mph NE | 5% |
| Tonight | 53°F | Partly Cloudy then Slight Chance Rain Showers | 3 to 9 mph S | 16% |
| Wednesday | 84°F | Sunny | 2 to 8 mph S | 5% |
| Wednesday Night | 57°F | Mostly Clear | 7 mph S | 2% |
| Thursday | 94°F | Sunny | 3 to 9 mph N | 2% |
| Thursday Night | 62°F | Mostly Clear | 6 to 9 mph NW | 0% |
| Friday | 97°F | Sunny | 5 to 13 mph NE | 1% |
| Friday Night | 64°F | Mostly Clear | 6 to 13 mph S | 1% |
| Saturday | 99°F | Sunny | 7 to 15 mph N | 2% |
| Saturday Night | 64°F | Mostly Clear | 5 to 15 mph N | 3% |
| Sunday | 97°F | Mostly Sunny | 5 to 17 mph NE | 9% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 to 17 mph N | 19% |
| Monday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 16 mph NE | 17% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 16 mph NE | 35% |
Forecast source: National Weather Service (api.weather.gov) for Green Valley (44.039, -103.112). Updated through the day.
Growing snapshot for Green Valley
Last spring frost
May 12
First fall frost
Oct 1
Growing season
139 days
Hardiness zone
5a
More local growing data for Green Valley: nearby ZIP 57703 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Caputa
Colonial Pine Hills
Cottonwood
Hill City
Johnson Siding
Keystone
New Underwood
Quinn
Rapid City
Wall
Climate data from the nearest NOAA station, Rapid City Rgnl Ap, Sd (2.7 mi from Green Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.