Porcupine, SD Weather & Growing Conditions
Today
53°F
Partly Sunny
Partly sunny. High near 53, with temperatures falling to around 47 in the afternoon. Northwest wind 6 to 13 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 53°F | Partly Sunny | 6 to 13 mph NW | 1% |
| Tonight | 32°F | Mostly Cloudy | 7 mph N | 1% |
| Thursday | 54°F | Mostly Sunny | 2 to 6 mph N | 0% |
| Thursday Night | 31°F | Partly Cloudy | 7 mph S | 0% |
| Friday | 56°F | Mostly Sunny | 5 to 9 mph NW | 0% |
| Friday Night | 34°F | Mostly Clear | 3 to 10 mph S | 0% |
| Saturday | 62°F | Sunny | 8 to 14 mph W | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Sunday | 67°F | Sunny | 12 to 21 mph SW | 0% |
| Sunday Night | 40°F | Mostly Clear | 8 to 14 mph SW | 0% |
| Monday | 64°F | Sunny | 7 to 10 mph NW | 0% |
| Monday Night | 37°F | Partly Cloudy | 5 to 8 mph SE | 0% |
| Tuesday | 64°F | Mostly Sunny | 7 to 12 mph S | 1% |
| Tuesday Night | 39°F | Partly Cloudy | 6 to 9 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Porcupine, SD
Last spring frost
May 17
First fall frost
Sep 25
Growing season
130 days
Hardiness zone
5a
Explore more for Porcupine, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Porcupine 11 N, Sd (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.