McLaughlin, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McLaughlin, a city in Corson County, South Dakota.
Today
46°F
Mostly Cloudy
Mostly cloudy. High near 46, with temperatures falling to around 40 in the afternoon. North northwest wind 10 to 16 mph, with gusts as high as 28 mph.
7-day forecast for McLaughlin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 46°F | Mostly Cloudy | 10 to 16 mph NNW | 1% |
| Tonight | 28°F | Mostly Cloudy | 12 mph NNW | 0% |
| Wednesday | 49°F | Mostly Cloudy | 12 to 16 mph NNW | 0% |
| Wednesday Night | 29°F | Mostly Cloudy | 9 to 14 mph NNW | 0% |
| Thursday | 47°F | Mostly Sunny | 5 to 9 mph NNE | 0% |
| Thursday Night | 26°F | Partly Cloudy | 5 mph SE | 0% |
| Friday | 50°F | Mostly Sunny | 7 mph SSW | 0% |
| Friday Night | 30°F | Partly Cloudy | 7 mph SW | 3% |
| Saturday | 58°F | Sunny | 8 to 15 mph W | 3% |
| Saturday Night | 31°F | Mostly Clear | 5 to 8 mph W | 2% |
| Sunday | 58°F | Sunny | 5 to 10 mph SSW | 0% |
| Sunday Night | 38°F | Mostly Clear | 7 to 10 mph WSW | 0% |
| Monday | 59°F | Sunny | 6 to 14 mph WNW | 0% |
| Monday Night | 33°F | Partly Cloudy | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for McLaughlin (45.813, -100.811). Updated through the day.
Growing snapshot for McLaughlin
Last spring frost
May 12
First fall frost
Sep 28
Growing season
137 days
Hardiness zone
4b
More local growing data for McLaughlin: nearby ZIP 57642 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mc Laughlin, Sd (4.7 mi from McLaughlin). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.