Mentor, MN Weather & Growing Conditions
Today
47°F
Slight Chance Light Rain
A slight chance of rain before 2pm. Cloudy, with a high near 47. North wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 47°F | Slight Chance Light Rain | 18 mph N | 20% |
| Tonight | 32°F | Mostly Cloudy | 14 to 17 mph N | 0% |
| Thursday | 40°F | Mostly Cloudy | 7 to 16 mph NNE | 0% |
| Thursday Night | 21°F | Partly Cloudy | 5 mph E | 0% |
| Friday | 42°F | Sunny | 5 to 10 mph S | 0% |
| Friday Night | 27°F | Partly Cloudy | 10 mph S | 0% |
| Saturday | 50°F | Mostly Sunny | 10 to 14 mph SW | 7% |
| Saturday Night | 32°F | Partly Cloudy | 7 to 12 mph W | 5% |
| Sunday | 50°F | Mostly Sunny | 9 mph SW | 0% |
| Sunday Night | 35°F | Partly Cloudy | 7 to 10 mph SSW | 0% |
| Monday | 54°F | Mostly Sunny | 10 to 15 mph WSW | 1% |
| Monday Night | 31°F | Mostly Clear | 5 to 9 mph WNW | 0% |
| Tuesday | 49°F | Mostly Sunny | 5 to 8 mph W | 1% |
| Tuesday Night | 32°F | Partly Cloudy | 6 mph SSW | 2% |
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 Nov 4, 2026.