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

When	Temp	Forecast	Wind	Precip
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

More local growing data for St. Marys Point: nearby ZIP 55043 weather · frost dates · planting calendar · Minnesota frost dates

Nearby towns & communities

Afton Bayport Birchwood Village Cottage Grove Dellwood Grant Hugo Lake Elmo Lake St. Croix Beach Lakeland Lakeland Shores Mahtomedi Marine on St. Croix Newport Oak Park Heights Oakdale Pine Springs Scandia St. Paul Park Stillwater Willernie Woodbury

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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.