Yankton, SD Weather & Growing Conditions
Overnight
39°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy, with a low around 39. Northwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Slight Chance Rain Showers | 20 mph NW | 17% |
| Wednesday | 46°F | Chance Rain Showers | 15 to 20 mph WNW | 46% |
| Wednesday Night | 37°F | Chance Rain Showers | 15 mph NW | 27% |
| Thursday | 46°F | Mostly Cloudy | 10 to 15 mph NNW | 0% |
| Thursday Night | 32°F | Mostly Cloudy | 0 to 10 mph N | 0% |
| Friday | 46°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Friday Night | 31°F | Partly Cloudy | 5 mph SSE | 0% |
| Saturday | 55°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Saturday Night | 36°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 58°F | Sunny | 5 mph SW | 0% |
| Sunday Night | 41°F | Mostly Clear | 5 to 10 mph SSW | 0% |
| Monday | 62°F | Sunny | 10 mph W | 0% |
| Monday Night | 39°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Tuesday | 59°F | Mostly Sunny | 0 to 5 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Yankton, SD
Last spring frost
Apr 27
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
5a
Explore more for Yankton, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Yankton 2 E, Sd (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.