McLaughlin, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McLaughlin, a city in Corson County, South Dakota.
This Afternoon
66°F
Cloudy
Cloudy, with a high near 66. East wind around 12 mph.
7-day forecast for McLaughlin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Cloudy | 12 mph E | 3% |
| Tonight | 55°F | Cloudy then Patchy Fog | 5 to 9 mph NE | 4% |
| Saturday | 65°F | Patchy Fog then Cloudy | 6 to 12 mph ENE | 12% |
| Saturday Night | 53°F | Chance Rain Showers | 12 mph ENE | 35% |
| Sunday | 61°F | Rain Showers Likely | 13 mph E | 58% |
| Sunday Night | 50°F | Chance Rain Showers | 7 to 10 mph E | 53% |
| Monday | 63°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 12 mph ESE | 16% |
| Monday Night | 49°F | Mostly Cloudy | 12 mph SE | 6% |
| Tuesday | 67°F | Mostly Cloudy | 12 to 20 mph SE | 4% |
| Tuesday Night | 53°F | Mostly Cloudy | 17 mph SE | 14% |
| Wednesday | 72°F | Partly Sunny then Slight Chance Rain Showers | 18 mph SSE | 17% |
| Wednesday Night | 54°F | Chance Rain Showers then Partly Cloudy | 7 to 15 mph SE | 26% |
| Thursday | 74°F | Mostly Sunny | 7 to 10 mph SE | 5% |
| Thursday Night | 55°F | Partly Cloudy | 9 mph SE | 8% |
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 Sep 18, 2026.