Mellette, SD Weather & Growing Conditions
Today
76°F
Patchy Smoke then Mostly Sunny
Patchy smoke between 7am and 9am. Mostly sunny, with a high near 76. West northwest wind 8 to 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Patchy Smoke then Mostly Sunny | 8 to 12 mph WNW | 0% |
| Tonight | 52°F | Mostly Clear | 7 mph SW | 0% |
| Wednesday | 83°F | Mostly Sunny | 6 to 13 mph SSW | 1% |
| Wednesday Night | 59°F | Partly Cloudy | 9 to 13 mph SSW | 3% |
| Thursday | 88°F | Sunny | 10 to 15 mph SSW | 9% |
| Thursday Night | 62°F | Mostly Clear | 10 mph S | 9% |
| Friday | 89°F | Sunny | 12 mph WSW | 2% |
| Friday Night | 61°F | Mostly Clear | 7 to 10 mph E | 4% |
| Saturday | 88°F | Sunny | 7 to 16 mph E | 6% |
| Saturday Night | 62°F | Mostly Clear | 10 to 14 mph ENE | 11% |
| Sunday | 85°F | Mostly Sunny | 9 to 15 mph ENE | 6% |
| Sunday Night | 63°F | Slight Chance Showers And Thunderstorms | 9 to 15 mph ENE | 25% |
| Monday | 84°F | Chance Showers And Thunderstorms then Partly Sunny | 10 to 16 mph NE | 25% |
| Monday Night | 61°F | Slight Chance Showers And Thunderstorms | 10 to 16 mph NE | 19% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mellette, SD
Last spring frost
May 11
First fall frost
Sep 27
Growing season
137 days
Hardiness zone
4a
Explore more for Mellette, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Mellette 4 W, Sd (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.