Mentor, MN Weather & Growing Conditions
Overnight
51°F
Mostly Cloudy
Mostly cloudy. Low around 51, with temperatures rising to around 54 overnight. East southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Cloudy | 5 mph ESE | 1% |
| Saturday | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 3 to 10 mph ENE | 15% |
| Saturday Night | 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% |
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.