Round Lake, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Round Lake, a city in Jackson County, Minnesota.
This Afternoon
62°F
Patchy Fog
Patchy fog. Cloudy, with a high near 62. North wind around 10 mph.
7-day forecast for Round Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Patchy Fog | 10 mph N | 5% |
| Tonight | 54°F | Patchy Fog | 10 to 15 mph NNE | 6% |
| Sunday | 66°F | Patchy Fog then Mostly Cloudy | 15 mph NE | 7% |
| Sunday Night | 50°F | Rain Showers Likely | 10 to 15 mph NE | 61% |
| Monday | 58°F | Rain Showers Likely | 10 mph ENE | 61% |
| Monday Night | 45°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 32% |
| Tuesday | 62°F | Mostly Sunny | 5 to 10 mph E | 4% |
| Tuesday Night | 44°F | Mostly Clear | 5 mph ESE | 0% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph SE | 4% |
| Wednesday Night | 50°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph SSE | 28% |
| Thursday | 68°F | Chance Showers And Thunderstorms | 10 mph SSE | 41% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 5 to 10 mph SE | 16% |
| Friday | 72°F | Mostly Cloudy | 5 to 10 mph SE | 12% |
| Friday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SE | 20% |
Forecast source: National Weather Service (api.weather.gov) for Round Lake (43.537, -95.472). Updated through the day.
Growing snapshot for Round Lake
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
164 days
Hardiness zone
5a
More local growing data for Round Lake: nearby ZIP 56167 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lake Park, Ia (8.4 mi from Round Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.