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.
This Afternoon
76°F
Mostly Sunny
Mostly sunny. High near 76, with temperatures falling to around 73 in the afternoon. Northeast wind around 7 mph, with gusts as high as 16 mph.
7-day forecast for Green Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Mostly Sunny | 7 mph NE | 5% |
| Tonight | 56°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 1 to 6 mph E | 54% |
| Saturday | 67°F | Rain Showers Likely | 3 to 8 mph E | 60% |
| Saturday Night | 52°F | Showers And Thunderstorms Likely | 5 to 8 mph E | 74% |
| Sunday | 60°F | Rain Showers | 6 to 9 mph E | 99% |
| Sunday Night | 49°F | Showers And Thunderstorms | 3 to 9 mph E | 93% |
| Monday | 63°F | Chance Rain Showers | 5 to 10 mph E | 37% |
| Monday Night | 49°F | Mostly Cloudy | 10 mph SE | 14% |
| Tuesday | 74°F | Mostly Sunny | 10 to 20 mph SE | 5% |
| Tuesday Night | 53°F | Slight Chance Rain Showers then Partly Cloudy | 9 to 15 mph S | 17% |
| Wednesday | 79°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 to 12 mph S | 20% |
| Wednesday Night | 53°F | Mostly Clear | 7 mph SW | 14% |
| Thursday | 79°F | Sunny | 3 to 9 mph NE | 7% |
| Thursday Night | 54°F | Partly Cloudy | 8 mph SE | 6% |
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 Sep 19, 2026.