Porcupine, SD Weather & Growing Conditions
Tonight
56°F
Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 3am. Cloudy. Low around 56, with temperatures rising to around 58 overnight. Northeast wind around 7 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Cloudy then Slight Chance Showers And Thunderstorms | 7 mph NE | 21% |
| Saturday | 70°F | Chance Rain Showers | 6 to 14 mph NE | 44% |
| Saturday Night | 53°F | Showers And Thunderstorms Likely | 8 to 14 mph E | 74% |
| Sunday | 65°F | Showers And Thunderstorms | 9 to 15 mph E | 98% |
| Sunday Night | 50°F | Showers And Thunderstorms | 8 to 14 mph NE | 92% |
| Monday | 67°F | Chance Rain Showers | 8 to 14 mph NE | 32% |
| Monday Night | 49°F | Mostly Cloudy | 9 to 15 mph SE | 10% |
| Tuesday | 75°F | Partly Sunny | 9 to 22 mph S | 10% |
| Tuesday Night | 55°F | Slight Chance Rain Showers then Partly Cloudy | 14 to 20 mph S | 18% |
| Wednesday | 81°F | Mostly Sunny | 13 to 18 mph S | 12% |
| Wednesday Night | 55°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 to 12 mph S | 16% |
| Thursday | 81°F | Mostly Sunny | 6 to 10 mph S | 6% |
| Thursday Night | 55°F | Partly Cloudy | 10 mph SE | 8% |
| Friday | 83°F | Mostly Sunny | 9 to 17 mph SE | 10% |
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 Sep 19, 2026.