Mahtomedi, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mahtomedi, a city in Washington County, Minnesota.
Today
62°F
Slight Chance Drizzle
A slight chance of drizzle before 4pm. Cloudy, with a high near 62. Northeast wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Mahtomedi
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Slight Chance Drizzle | 10 mph NE | 21% |
| Tonight | 55°F | Mostly Cloudy | 5 to 10 mph NNE | 7% |
| Sunday | 67°F | Partly Sunny | 10 mph NE | 1% |
| Sunday Night | 49°F | Mostly Cloudy | 5 to 10 mph ENE | 2% |
| Monday | 65°F | Partly Sunny | 5 to 10 mph E | 2% |
| Monday Night | 45°F | Partly Cloudy | 5 mph E | 2% |
| Tuesday | 65°F | Sunny | 5 mph E | 2% |
| Tuesday Night | 44°F | Mostly Clear | 5 mph ESE | 0% |
| Wednesday | 67°F | Sunny | 5 mph SE | 0% |
| Wednesday Night | 49°F | Mostly Clear | 5 mph SE | 4% |
| Thursday | 68°F | Mostly Sunny | 5 mph SE | 7% |
| Thursday Night | 51°F | Partly Cloudy | 0 mph | 4% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 53°F | Partly Cloudy | 5 mph SSE | 8% |
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
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Lake Elmo
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Lakeland
Lakeland Shores
Marine on St. Croix
Newport
Oak Park Heights
Oakdale
Pine Springs
Scandia
St. Marys Point
St. Paul Park
Stillwater
Willernie
Woodbury
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 Sep 19, 2026.