Bison, SD Weather & Growing Conditions
Today
65°F
Chance Rain Showers
A chance of rain showers and patchy fog. Cloudy, with a high near 65. Northeast wind around 9 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Chance Rain Showers | 9 mph NE | 35% |
| Tonight | 49°F | Rain Showers | 10 mph E | 79% |
| Sunday | 59°F | Rain Showers | 12 to 16 mph E | 95% |
| Sunday Night | 48°F | Rain Showers | 6 to 12 mph E | 95% |
| Monday | 64°F | Rain Showers Likely | 6 to 10 mph E | 56% |
| Monday Night | 45°F | Mostly Cloudy | 9 to 13 mph SE | 12% |
| Tuesday | 67°F | Partly Sunny | 14 to 23 mph SE | 3% |
| Tuesday Night | 50°F | Mostly Cloudy | 18 to 23 mph SE | 3% |
| Wednesday | 75°F | Mostly Sunny then Chance Showers And Thunderstorms | 20 to 23 mph SE | 25% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms | 5 to 18 mph SE | 50% |
| Thursday | 79°F | Mostly Sunny | 6 mph NE | 9% |
| Thursday Night | 54°F | Partly Cloudy | 3 to 7 mph SE | 4% |
| Friday | 79°F | Mostly Sunny | 7 to 21 mph SE | 4% |
| Friday Night | 56°F | Slight Chance Rain Showers | 17 to 21 mph SE | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bison, SD
Last spring frost
May 11
First fall frost
Sep 30
Growing season
140 days
Hardiness zone
4b
Explore more for Bison, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Glad Valley 2 W, Sd (14.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.