St. Martin, MN Weather & Growing Conditions
Today
72°F
Patchy Smoke then Partly Sunny
Patchy smoke between 9am and noon. Partly sunny, with a high near 72. Northwest wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Patchy Smoke then Partly Sunny | 10 mph NW | 0% |
| Tonight | 52°F | Mostly Clear | 5 to 10 mph W | 1% |
| Wednesday | 77°F | Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 58°F | Partly Cloudy | 5 to 10 mph SW | 1% |
| Thursday | 82°F | Sunny | 10 to 15 mph SSW | 1% |
| Thursday Night | 62°F | Mostly Clear | 10 to 15 mph SSW | 3% |
| Friday | 84°F | Sunny | 10 mph SW | 5% |
| Friday Night | 61°F | Mostly Clear | 5 to 10 mph SSW | 14% |
| Saturday | 83°F | Sunny | 0 to 10 mph SSW | 13% |
| Saturday Night | 62°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 41% |
| Sunday | 82°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph N | 39% |
| Sunday Night | 62°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NE | 16% |
| Monday | 81°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 16% |
| Monday Night | 61°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph NNE | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Martin, MN
Last spring frost
May 4
First fall frost
Oct 1
Growing season
148 days
Hardiness zone
4b
Explore more for St. Martin, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Melrose, Mn (13.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.