St. Marys Point, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Marys Point, a city in Washington County, Minnesota.
Today
76°F
Chance Showers And Thunderstorms then Partly Sunny
A chance of showers and thunderstorms before 8am. Partly sunny, with a high near 76. Northwest wind 5 to 10 mph. Chance of precipitation is 50%.
7-day forecast for St. Marys Point
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Chance Showers And Thunderstorms then Partly Sunny | 5 to 10 mph NW | 50% |
| Tonight | 56°F | Partly Cloudy | 0 to 10 mph NNW | 6% |
| Wednesday | 77°F | Sunny | 0 to 5 mph WNW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 5 mph SW | 0% |
| Thursday | 82°F | Sunny | 5 to 10 mph SSW | 0% |
| Thursday Night | 63°F | Mostly Clear | 5 to 10 mph SSW | 3% |
| Friday | 84°F | Sunny | 5 to 10 mph SSW | 11% |
| Friday Night | 64°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 31% |
| Saturday | 84°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 0 to 5 mph SSW | 15% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 5 mph NNE | 48% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 5 mph SSW | 48% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 19% |
| Monday | 82°F | Slight Chance Showers And Thunderstorms | 5 mph NE | 23% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 24% |
Forecast source: National Weather Service (api.weather.gov) for St. Marys Point (44.911, -92.770). Updated through the day.
Growing snapshot for St. Marys Point
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
178 days
Hardiness zone
5a
More local growing data for St. Marys Point: nearby ZIP 55043 weather · frost dates · planting calendar · Minnesota frost dates
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Climate data from the nearest NOAA station, Stillwater 1 Se, Mn (7.1 mi from St. Marys Point). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.