Round Lake, MN Weather & Growing Conditions
Today
66°F
Areas Of Fog
Areas of fog and a chance of rain showers before 4pm. Cloudy, with a high near 66. North wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Areas Of Fog | 10 to 15 mph N | 26% |
| Tonight | 54°F | Patchy Fog | 10 to 15 mph NNE | 12% |
| Sunday | 66°F | Cloudy | 15 mph NE | 7% |
| Sunday Night | 50°F | Chance Rain Showers | 10 to 15 mph ENE | 33% |
| Monday | 61°F | Chance Rain Showers | 10 mph ENE | 44% |
| Monday Night | 45°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 21% |
| Tuesday | 63°F | Mostly Sunny | 5 to 10 mph E | 4% |
| Tuesday Night | 43°F | Mostly Clear | 5 mph SE | 1% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph SE | 3% |
| Wednesday Night | 48°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SSE | 17% |
| Thursday | 68°F | Slight Chance Rain Showers | 5 to 10 mph SSE | 20% |
| Thursday Night | 51°F | Mostly Cloudy | 5 mph SSE | 11% |
| Friday | 70°F | Partly Sunny | 5 to 10 mph SE | 11% |
| Friday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SSE | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Round Lake, MN
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
164 days
Hardiness zone
5a
Explore more for Round Lake, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Lake Park, Ia (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.