Mahtomedi, MN Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Mahtomedi, a city in Washington County, Minnesota.

Today

55°F

Light Rain

Rain and patchy fog. Mostly cloudy, with a high near 55. West northwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Mahtomedi

When	Temp	Forecast	Wind	Precip
Today	55°F	Light Rain	5 to 10 mph WNW	92%
Tonight	45°F	Light Rain then Drizzle Likely	10 to 20 mph NNW	96%
Thursday	48°F	Slight Chance Drizzle then Mostly Cloudy	10 to 15 mph N	16%
Thursday Night	34°F	Mostly Cloudy	5 to 10 mph N	0%
Friday	45°F	Mostly Sunny	0 to 5 mph NNE	0%
Friday Night	30°F	Mostly Clear	0 mph	0%
Saturday	49°F	Mostly Sunny	0 to 5 mph SSW	2%
Saturday Night	37°F	Mostly Clear	5 mph WSW	4%
Sunday	53°F	Sunny	5 mph W	4%
Sunday Night	38°F	Mostly Clear	5 mph SW	0%
Monday	57°F	Mostly Sunny	5 to 10 mph WSW	1%
Monday Night	41°F	Mostly Clear	5 mph WNW	1%
Tuesday	54°F	Sunny	5 mph WNW	1%
Tuesday Night	40°F	Partly Cloudy	0 to 5 mph WSW	3%

Forecast source: National Weather Service (api.weather.gov) for Mahtomedi (45.058, -92.970). Updated through the day.

Growing snapshot for Mahtomedi

Last spring frost

Apr 30

First fall frost

Oct 11

Growing season

163 days

More local growing data for Mahtomedi: nearby ZIP 55090 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 Marine on St. Croix Newport Oak Park Heights Oakdale Pine Springs Scandia St. Marys Point St. Paul Park Stillwater Willernie Woodbury

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Climate data from the nearest NOAA station, Stillwater 2Sw, Mn (5.2 mi from Mahtomedi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.