La Plant, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for La Plant, a community in Dewey County, South Dakota.
Today
75°F
Patchy Smoke then Sunny
Patchy smoke before 8am. Sunny, with a high near 75. Northwest wind 8 to 12 mph.
7-day forecast for La Plant
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Patchy Smoke then Sunny | 8 to 12 mph NW | 0% |
| Tonight | 55°F | Mostly Clear | 3 to 8 mph SW | 0% |
| Wednesday | 84°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Wednesday Night | 60°F | Partly Cloudy | 7 to 10 mph S | 2% |
| Thursday | 90°F | Sunny | 9 mph WSW | 1% |
| Thursday Night | 63°F | Mostly Clear | 8 mph E | 1% |
| Friday | 92°F | Sunny | 7 to 12 mph NE | 1% |
| Friday Night | 64°F | Mostly Clear | 10 mph ESE | 1% |
| Saturday | 94°F | Mostly Sunny | 10 to 14 mph ENE | 1% |
| Saturday Night | 63°F | Mostly Clear | 12 mph ENE | 3% |
| Sunday | 90°F | Mostly Sunny | 9 to 15 mph ENE | 6% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 14 mph E | 32% |
| Monday | 88°F | Partly Sunny | 12 to 15 mph ENE | 13% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 to 15 mph ENE | 31% |
Forecast source: National Weather Service (api.weather.gov) for La Plant (45.128, -100.641). Updated through the day.
Growing snapshot for La Plant
Last spring frost
May 10
First fall frost
Sep 30
Growing season
141 days
Hardiness zone
4b
More local growing data for La Plant: nearby ZIP 57652 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Timber Lake, Sd (27.8 mi from La Plant). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.