Frontenac, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frontenac, a community in Goodhue County, Minnesota.
Overnight
68°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy, with a low around 68. Southwest wind around 10 mph. Chance of precipitation is 50%.
7-day forecast for Frontenac
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Chance Showers And Thunderstorms | 10 mph SW | 46% |
| Tuesday | 79°F | Chance Showers And Thunderstorms then Patchy Smoke | 5 to 10 mph WNW | 48% |
| Tuesday Night | 55°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph WNW | 16% |
| Wednesday | 78°F | Sunny | 0 to 5 mph NW | 1% |
| Wednesday Night | 56°F | Mostly Clear | 0 to 5 mph WSW | 0% |
| Thursday | 84°F | Sunny | 0 to 10 mph SSW | 0% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SSW | 1% |
| Friday | 87°F | Sunny | 5 to 10 mph SSW | 11% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 23% |
| Saturday | 87°F | Sunny | 5 mph SSW | 13% |
| Saturday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 mph WNW | 42% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 5 mph SW | 42% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 mph NE | 25% |
| Monday | 86°F | Chance Showers And Thunderstorms | 5 mph NE | 26% |
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 Aug 4, 2026.