Frontenac, MN Weather & Growing Conditions
This Afternoon
62°F
Patchy Fog
Patchy fog and showers and thunderstorms likely. Cloudy, with a high near 62. East wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Patchy Fog | 15 mph E | 64% |
| Tonight | 56°F | Patchy Fog | 15 mph E | 95% |
| Saturday | 65°F | Patchy Fog | 5 to 15 mph ENE | 70% |
| Saturday Night | 55°F | Slight Chance Drizzle then Mostly Cloudy | 10 mph NE | 24% |
| Sunday | 69°F | Partly Sunny | 10 mph NE | 6% |
| Sunday Night | 50°F | Mostly Cloudy | 5 to 10 mph ENE | 5% |
| Monday | 65°F | Mostly Cloudy | 10 mph ENE | 13% |
| Monday Night | 46°F | Mostly Cloudy | 5 mph ENE | 13% |
| Tuesday | 64°F | Mostly Sunny | 5 mph E | 7% |
| Tuesday Night | 45°F | Mostly Clear | 0 to 5 mph E | 3% |
| Wednesday | 68°F | Sunny | 5 mph ESE | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 0 mph | 7% |
| Thursday | 70°F | Mostly Sunny | 0 mph | 9% |
| Thursday Night | 52°F | Partly Cloudy | 0 mph | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Frontenac, MN
Last spring frost
Apr 23
First fall frost
Oct 14
Growing season
173 days
Hardiness zone
4b
Explore more for Frontenac, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Red Wing Dam 3, Mn (14.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.