Mentor, MN Weather & Growing Conditions
Today
72°F
Sunny
Sunny. High near 72, with temperatures falling to around 70 in the afternoon. West northwest wind 8 to 13 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Sunny | 8 to 13 mph WNW | 0% |
| Tonight | 50°F | Mostly Clear | 2 to 13 mph SW | 0% |
| Wednesday | 80°F | Sunny | 5 to 13 mph SW | 0% |
| Wednesday Night | 58°F | Partly Cloudy then Slight Chance Rain Showers | 8 to 12 mph SW | 15% |
| Thursday | 83°F | Slight Chance Rain Showers then Sunny | 8 to 12 mph WSW | 15% |
| Thursday Night | 59°F | Mostly Clear | 5 to 10 mph SSE | 5% |
| Friday | 81°F | Sunny | 6 to 12 mph W | 4% |
| Friday Night | 55°F | Mostly Clear | 3 to 12 mph NNE | 7% |
| Saturday | 80°F | Mostly Sunny | 3 to 10 mph NE | 8% |
| Saturday Night | 57°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 17% |
| Sunday | 78°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 9 mph NNE | 15% |
| Sunday Night | 57°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 9 mph NNE | 21% |
| Monday | 78°F | Slight Chance Rain Showers | 6 to 9 mph NNE | 21% |
| Monday Night | 57°F | Slight Chance Rain Showers | 5 to 9 mph NE | 15% |
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 Aug 4, 2026.