Sisseton, SD Weather & Growing Conditions
Today
73°F
Sunny
Sunny, with a high near 73. West northwest wind around 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 12 mph WNW | 0% |
| Tonight | 54°F | Mostly Clear | 5 to 9 mph WSW | 0% |
| Wednesday | 79°F | Sunny | 12 mph WSW | 0% |
| Wednesday Night | 62°F | Partly Cloudy | 7 to 21 mph SW | 2% |
| Thursday | 83°F | Sunny | 13 to 21 mph SW | 6% |
| Thursday Night | 64°F | Mostly Clear | 10 to 16 mph SSW | 7% |
| Friday | 84°F | Sunny | 9 to 13 mph WSW | 8% |
| Friday Night | 61°F | Mostly Clear | 5 to 9 mph E | 8% |
| Saturday | 81°F | Slight Chance Rain Showers | 5 to 13 mph ESE | 15% |
| Saturday Night | 62°F | Slight Chance Showers And Thunderstorms | 8 to 12 mph E | 20% |
| Sunday | 81°F | Slight Chance Rain Showers then Mostly Sunny | 7 to 10 mph ENE | 20% |
| Sunday Night | 62°F | Partly Cloudy then Chance Rain Showers | 8 mph ENE | 28% |
| Monday | 78°F | Chance Rain Showers | 7 to 12 mph NE | 28% |
| Monday Night | 61°F | Slight Chance Rain Showers | 6 to 10 mph NE | 19% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sisseton, SD
Last spring frost
May 4
First fall frost
Oct 3
Growing season
151 days
Hardiness zone
4b
Explore more for Sisseton, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Sisseton, Sd (1.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.