Mountain Lake, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountain Lake, a city in Cottonwood County, Minnesota.
This Afternoon
64°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms. Cloudy, with a high near 64. East wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mountain Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Patchy Fog | 10 mph E | 38% |
| Tonight | 59°F | Patchy Fog then Areas Of Fog | 5 to 10 mph ENE | 62% |
| Saturday | 64°F | Areas Of Fog | 5 to 10 mph NNE | 29% |
| Saturday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 10 mph NNE | 25% |
| Sunday | 64°F | Mostly Cloudy | 10 to 15 mph NE | 12% |
| Sunday Night | 51°F | Mostly Cloudy then Chance Rain Showers | 5 to 10 mph ENE | 35% |
| Monday | 60°F | Chance Rain Showers | 10 mph ENE | 43% |
| Monday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 40% |
| Tuesday | 63°F | Mostly Sunny | 5 to 10 mph E | 4% |
| Tuesday Night | 45°F | Partly Cloudy | 0 to 5 mph SE | 0% |
| Wednesday | 65°F | Mostly Sunny | 0 to 5 mph SSE | 3% |
| Wednesday Night | 49°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SSE | 18% |
| Thursday | 69°F | Slight Chance Rain Showers | 5 mph S | 18% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 5 mph S | 8% |
Forecast source: National Weather Service (api.weather.gov) for Mountain Lake (43.940, -94.928). Updated through the day.
Growing snapshot for Mountain Lake
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
162 days
Hardiness zone
5a
More local growing data for Mountain Lake: nearby ZIP 56159 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Windom, Mn (10 mi from Mountain Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.