Fort Pierre, SD Weather & Growing Conditions
Overnight
57°F
Chance Rain Showers
A chance of rain showers. Cloudy, with a low around 57. East northeast wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Chance Rain Showers | 13 mph ENE | 31% |
| Sunday | 60°F | Rain Showers | 16 mph E | 85% |
| Sunday Night | 49°F | Rain Showers | 14 mph ENE | 98% |
| Monday | 62°F | Chance Rain Showers | 13 mph ENE | 51% |
| Monday Night | 46°F | Slight Chance Rain Showers then Mostly Cloudy | 13 mph SE | 16% |
| Tuesday | 67°F | Mostly Sunny | 12 to 22 mph SE | 4% |
| Tuesday Night | 51°F | Partly Cloudy | 22 mph SE | 11% |
| Wednesday | 72°F | Partly Sunny then Slight Chance Rain Showers | 22 to 25 mph SSE | 17% |
| Wednesday Night | 55°F | Chance Showers And Thunderstorms | 15 to 25 mph SSE | 49% |
| Thursday | 78°F | Chance Showers And Thunderstorms then Partly Sunny | 9 to 14 mph SE | 26% |
| Thursday Night | 55°F | Partly Cloudy | 8 mph ESE | 8% |
| Friday | 78°F | Mostly Sunny | 8 to 21 mph SE | 7% |
| Friday Night | 58°F | Partly Cloudy then Slight Chance Rain Showers | 17 to 21 mph SE | 20% |
| Saturday | 78°F | Chance Rain Showers | 21 mph SSE | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fort Pierre, SD
Last spring frost
May 6
First fall frost
Oct 5
Growing season
152 days
Hardiness zone
4b
Explore more for Fort Pierre, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Oahe Dam, Sd (9.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.