Plymouth, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plymouth, a city in Hennepin County, Minnesota.
Today
62°F
Slight Chance Drizzle then Cloudy
A slight chance of drizzle before 10am, then patchy fog and a slight chance of drizzle between 10am and 11am. Cloudy, with a high near 62. Northeast wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Plymouth
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Slight Chance Drizzle then Cloudy | 10 mph NE | 23% |
| Tonight | 53°F | Mostly Cloudy | 5 to 10 mph NNE | 6% |
| Sunday | 66°F | Mostly Cloudy | 5 to 10 mph NE | 2% |
| Sunday Night | 49°F | Mostly Cloudy | 5 to 10 mph ENE | 2% |
| Monday | 65°F | Partly Sunny | 5 mph ENE | 3% |
| Monday Night | 45°F | Partly Cloudy | 5 mph ENE | 2% |
| Tuesday | 65°F | Sunny | 5 mph E | 2% |
| Tuesday Night | 44°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Wednesday | 67°F | Sunny | 5 mph SE | 0% |
| Wednesday Night | 48°F | Mostly Clear | 0 to 5 mph SE | 6% |
| Thursday | 68°F | Mostly Sunny | 5 mph SE | 7% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph SE | 5% |
| Friday | 71°F | Mostly Sunny | 5 mph SE | 5% |
| Friday Night | 53°F | Partly Cloudy | 5 mph SSE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Plymouth (45.022, -93.463). Updated through the day.
Growing snapshot for Plymouth
Last spring frost
Apr 29
First fall frost
Oct 12
Growing season
163 days
Hardiness zone
5a
More local growing data for Plymouth: nearby ZIP 55446 weather · frost dates · planting calendar · Minnesota frost dates
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Climate data from the nearest NOAA station, New Hope, Mn (5.8 mi from Plymouth). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.