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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.

Tonight
51°F
Mostly Cloudy
Mostly cloudy, with a low around 51. Northeast wind 5 to 10 mph.

7-day forecast for St. Marys Point

WhenTempForecastWindPrecip
Tonight 51°F Mostly Cloudy 5 to 10 mph NE 12%
Sunday 69°F Partly Sunny 5 to 10 mph NE 1%
Sunday Night 48°F Mostly Cloudy 5 to 10 mph NE 0%
Monday 63°F Mostly Cloudy 5 mph ENE 4%
Monday Night 43°F Mostly Cloudy 0 to 5 mph ENE 3%
Tuesday 64°F Sunny 5 mph E 2%
Tuesday Night 42°F Mostly Clear 0 to 5 mph ESE 1%
Wednesday 67°F Sunny 0 to 5 mph ESE 0%
Wednesday Night 48°F Partly Cloudy 0 to 5 mph SE 7%
Thursday 68°F Slight Chance Rain Showers 0 to 5 mph SE 21%
Thursday Night 52°F Slight Chance Rain Showers then Mostly Cloudy 0 to 5 mph SE 18%
Friday 72°F Partly Sunny 0 to 5 mph SE 7%
Friday Night 54°F Partly Cloudy 0 to 5 mph SE 6%
Saturday 72°F Mostly Sunny then Slight Chance Rain Showers 0 to 10 mph SSE 21%

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 Sep 20, 2026.