Mentor, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mentor, a city in Polk County, Minnesota.
Overnight
39°F
Chance Light Rain
A chance of rain. Cloudy. Low around 39, with temperatures rising to around 42 overnight. North wind around 14 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mentor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Chance Light Rain | 14 mph N | 34% |
| Wednesday | 47°F | Chance Light Rain | 17 mph N | 38% |
| Wednesday Night | 30°F | Mostly Cloudy | 16 mph N | 1% |
| Thursday | 40°F | Mostly Cloudy | 8 to 15 mph N | 0% |
| Thursday Night | 21°F | Partly Cloudy | 5 mph E | 0% |
| Friday | 42°F | Sunny | 3 to 9 mph S | 0% |
| Friday Night | 26°F | Partly Cloudy | 7 to 10 mph S | 0% |
| Saturday | 50°F | Mostly Sunny | 10 to 14 mph SW | 7% |
| Saturday Night | 31°F | Partly Cloudy | 6 to 12 mph W | 5% |
| Sunday | 50°F | Mostly Sunny | 6 to 9 mph SW | 0% |
| Sunday Night | 34°F | Partly Cloudy | 7 to 10 mph SSW | 0% |
| Monday | 54°F | Mostly Sunny | 9 to 14 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% |
Forecast source: National Weather Service (api.weather.gov) for Mentor (47.697, -96.144). Updated through the day.
Growing snapshot for Mentor
Last spring frost
May 9
First fall frost
Sep 30
Growing season
142 days
Hardiness zone
4a
More local growing data for Mentor: nearby ZIP 56736 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Beltrami
Climax
Crookston
Erskine
Fertile
Fisher
Fosston
Gully
McIntosh
Nielsville
Trail
Warren
Winger
Climate data from the nearest NOAA station, Red Lake Falls, Mn (12.4 mi from Mentor). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.