Frontenac, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frontenac, a community in Goodhue County, Minnesota.
This Afternoon
63°F
Light Rain
Rain. Cloudy. High near 63, with temperatures falling to around 60 in the afternoon. North northwest wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Frontenac
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Light Rain | 5 mph NNW | 86% |
| Tonight | 52°F | Rain | 5 mph NE | 95% |
| Wednesday | 59°F | Light Rain | 5 to 10 mph S | 90% |
| Wednesday Night | 45°F | Light Rain | 10 mph WNW | 83% |
| Thursday | 51°F | Light Rain Likely | 10 mph NNW | 68% |
| Thursday Night | 36°F | Mostly Cloudy | 5 to 10 mph NNE | 3% |
| Friday | 49°F | Partly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 30°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 54°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 5 mph W | 7% |
| Sunday | 58°F | Mostly Sunny | 5 mph WNW | 11% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph SW | 3% |
| Monday | 61°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Frontenac (44.504, -92.353). Updated through the day.
Growing snapshot for Frontenac
Last spring frost
Apr 23
First fall frost
Oct 14
Growing season
173 days
Hardiness zone
4b
More local growing data for Frontenac: nearby ZIP 55026 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Red Wing Dam 3, Mn (14.8 mi from Frontenac). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.