Round Lake, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Round Lake, a city in Jackson County, Minnesota.
Overnight
40°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 40, with temperatures rising to around 43 overnight. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Round Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Rain Showers Likely | 15 mph NW | 59% |
| Wednesday | 45°F | Rain Showers Likely | 15 mph WNW | 69% |
| Wednesday Night | 37°F | Rain Showers Likely | 15 mph NW | 61% |
| Thursday | 44°F | Mostly Cloudy | 15 mph NNW | 5% |
| Thursday Night | 31°F | Mostly Cloudy | 5 to 10 mph N | 0% |
| Friday | 44°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 to 5 mph SSE | 0% |
| Saturday | 49°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 54°F | Sunny | 5 to 10 mph WSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Monday | 60°F | Sunny | 10 mph W | 0% |
| Monday Night | 37°F | Mostly Clear | 5 to 10 mph NW | 0% |
| Tuesday | 56°F | Mostly Sunny | 5 mph WNW | 0% |
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 Nov 4, 2026.