Mahtomedi, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mahtomedi, a city in Washington County, Minnesota.
Overnight
65°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 65, with temperatures rising to around 70 overnight. Northwest wind around 10 mph. Chance of precipitation is 80%.
7-day forecast for Mahtomedi
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Showers And Thunderstorms | 10 mph NW | 77% |
| Tuesday | 75°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 10 mph NW | 23% |
| Tuesday Night | 58°F | Patchy Smoke then Partly Cloudy | 0 to 10 mph WNW | 3% |
| Wednesday | 77°F | Sunny | 0 to 5 mph WSW | 0% |
| Wednesday Night | 61°F | Mostly Clear | 5 mph SW | 0% |
| Thursday | 82°F | Sunny | 5 to 10 mph SSW | 0% |
| Thursday Night | 65°F | Mostly Clear | 10 mph SSW | 3% |
| Friday | 85°F | Sunny | 10 mph SSW | 9% |
| Friday Night | 65°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 29% |
| Saturday | 84°F | Mostly Sunny | 5 mph SSW | 14% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 mph N | 50% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 5 mph SSW | 50% |
| Sunday Night | 65°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NNE | 18% |
| Monday | 81°F | Slight Chance Showers And Thunderstorms | 5 mph NE | 22% |
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
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 Aug 4, 2026.