Plymouth, MN Weather & Growing Conditions
Today
75°F
Mostly Sunny then Patchy Smoke
Patchy smoke after 5pm. Mostly sunny, with a high near 75. Northwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny then Patchy Smoke | 5 to 10 mph NW | 2% |
| Tonight | 57°F | Partly Cloudy | 5 to 10 mph WNW | 2% |
| Wednesday | 78°F | Sunny | 0 to 10 mph WSW | 0% |
| Wednesday Night | 61°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Thursday | 82°F | Sunny | 5 to 15 mph SSW | 0% |
| Thursday Night | 65°F | Mostly Clear | 10 to 15 mph SSW | 3% |
| Friday | 85°F | Sunny | 10 to 15 mph SSW | 9% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 23% |
| Saturday | 85°F | Sunny | 5 to 10 mph SSW | 14% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph WNW | 52% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 52% |
| Sunday Night | 66°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NNE | 17% |
| Monday | 82°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 20% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NNE | 23% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Plymouth, MN
Last spring frost
Apr 29
First fall frost
Oct 12
Growing season
163 days
Hardiness zone
5a
Explore more for Plymouth, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, New Hope, Mn (3.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.