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.
This Afternoon
67°F
Patchy Fog
Patchy fog. Cloudy. High near 67, with temperatures falling to around 64 in the afternoon. Northeast wind around 6 mph.
7-day forecast for La Plant
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Patchy Fog | 6 mph NE | 1% |
| Tonight | 56°F | Areas Of Fog | 5 to 8 mph NE | 7% |
| Saturday | 67°F | Areas Of Fog then Slight Chance Light Rain | 8 to 13 mph NE | 16% |
| Saturday Night | 54°F | Chance Rain Showers | 12 mph ENE | 52% |
| Sunday | 62°F | Rain Showers Likely | 14 mph E | 66% |
| Sunday Night | 52°F | Rain Showers | 8 to 12 mph ENE | 86% |
| Monday | 63°F | Chance Rain Showers | 8 to 12 mph E | 31% |
| Monday Night | 50°F | Mostly Cloudy | 12 mph SE | 10% |
| Tuesday | 69°F | Partly Sunny | 13 to 21 mph SE | 5% |
| Tuesday Night | 54°F | Mostly Cloudy | 20 mph SE | 13% |
| Wednesday | 74°F | Partly Sunny then Slight Chance Rain Showers | 17 to 22 mph SSE | 19% |
| Wednesday Night | 55°F | Chance Rain Showers | 8 to 16 mph SE | 34% |
| Thursday | 75°F | Mostly Sunny | 10 mph SE | 5% |
| Thursday Night | 56°F | Partly Cloudy | 10 mph ESE | 10% |
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 Sep 19, 2026.