Porcupine, SD Weather & Growing Conditions
Today
74°F
Areas Of Smoke
Areas of smoke and a slight chance of rain showers. Mostly sunny, with a high near 74. North wind 3 to 7 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Areas Of Smoke | 3 to 7 mph N | 16% |
| Tonight | 54°F | Partly Cloudy then Slight Chance Rain Showers | 8 mph S | 19% |
| Wednesday | 86°F | Sunny | 9 mph S | 7% |
| Wednesday Night | 59°F | Mostly Clear | 8 to 16 mph S | 2% |
| Thursday | 95°F | Sunny | 8 to 13 mph NW | 2% |
| Thursday Night | 63°F | Mostly Clear | 8 to 12 mph SE | 1% |
| Friday | 100°F | Sunny | 8 to 14 mph E | 1% |
| Friday Night | 67°F | Clear | 9 to 15 mph S | 2% |
| Saturday | 101°F | Sunny | 10 to 18 mph NW | 1% |
| Saturday Night | 65°F | Mostly Clear | 7 to 17 mph E | 1% |
| Sunday | 100°F | Mostly Sunny | 7 to 21 mph SE | 9% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 10 to 21 mph E | 22% |
| Monday | 96°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 10 to 21 mph NE | 15% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 12 to 21 mph NE | 37% |
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 Aug 4, 2026.