Harman US

Mentor, MN Weather & Growing Conditions

Today
70°F
Patchy Fog then Slight Chance Rain Showers
Patchy fog before 10am, then a slight chance of rain showers. Mostly cloudy, with a high near 70. Northeast wind 5 to 10 mph. Chance of precipitation is 20%.

7-day forecast

WhenTempForecastWindPrecip
Today 70°F Patchy Fog then Slight Chance Rain Showers 5 to 10 mph NE 15%
Tonight 48°F Slight Chance Rain Showers then Mostly Cloudy 8 to 12 mph NNE 18%
Sunday 64°F Partly Sunny 10 mph NE 0%
Sunday Night 43°F Mostly Cloudy 8 mph E 0%
Monday 66°F Sunny 7 mph SE 0%
Monday Night 41°F Mostly Clear 5 to 8 mph SE 1%
Tuesday 67°F Sunny 8 to 13 mph SSE 1%
Tuesday Night 45°F Mostly Clear 10 mph SSE 0%
Wednesday 68°F Mostly Sunny 10 to 16 mph SSE 2%
Wednesday Night 50°F Partly Cloudy 12 mph SSE 13%
Thursday 70°F Partly Sunny 9 to 13 mph SSE 13%
Thursday Night 53°F Partly Cloudy 10 mph SSE 9%
Friday 73°F Mostly Sunny 9 to 14 mph SSE 7%
Friday Night 54°F Mostly Cloudy 14 mph SSE 14%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Mentor, MN

Last spring frost
May 9
First fall frost
Sep 30
Growing season
142 days
Hardiness zone
4a

Explore more for Mentor, MN: full frost dates · planting calendar · Minnesota frost dates

Climate data from the nearest NOAA station, Red Lake Falls, Mn (12.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.