Frontenac, MN Weather & Growing Conditions
This Afternoon
63°F
Chance Light Rain
A chance of rain. Cloudy. High near 63, with temperatures falling to around 60 in the afternoon. West southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Chance Light Rain | 5 mph WSW | 51% |
| Tonight | 54°F | Rain | 5 to 10 mph NNE | 94% |
| Wednesday | 59°F | Light Rain | 5 to 10 mph SSE | 91% |
| Wednesday Night | 47°F | Light Rain | 10 to 15 mph WNW | 86% |
| Thursday | 52°F | Light Rain Likely | 10 to 15 mph N | 65% |
| Thursday Night | 38°F | Mostly Cloudy | 10 to 15 mph NNE | 3% |
| Friday | 48°F | Mostly Sunny | 0 to 10 mph NNE | 0% |
| Friday Night | 32°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 54°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Saturday Night | 38°F | Partly Cloudy | 5 mph W | 7% |
| Sunday | 57°F | Mostly Sunny | 5 mph WNW | 12% |
| Sunday Night | 39°F | Partly Cloudy | 5 mph SW | 3% |
| Monday | 61°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 to 10 mph W | 0% |
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 Nov 4, 2026.