Plymouth, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plymouth, a city in Wayne County, Michigan.
Today
68°F
Rain Showers
Rain showers before 2pm, then showers and thunderstorms likely. Cloudy. High near 68, with temperatures falling to around 65 in the afternoon. East southeast wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Plymouth
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Rain Showers | 6 to 9 mph ESE | 75% |
| Tonight | 60°F | Patchy Fog | 5 to 8 mph E | 94% |
| Sunday | 70°F | Patchy Fog | 6 to 13 mph NNE | 42% |
| Sunday Night | 53°F | Mostly Cloudy | 13 mph NE | 2% |
| Monday | 63°F | Mostly Cloudy | 15 mph NE | 2% |
| Monday Night | 50°F | Mostly Cloudy | 15 mph NE | 6% |
| Tuesday | 63°F | Partly Sunny | 17 mph NE | 12% |
| Tuesday Night | 51°F | Chance Rain Showers | 17 mph ENE | 44% |
| Wednesday | 62°F | Chance Rain Showers | 14 to 17 mph ENE | 50% |
| Wednesday Night | 52°F | Chance Rain Showers | 9 to 14 mph ENE | 49% |
| Thursday | 65°F | Slight Chance Rain Showers then Partly Sunny | 12 mph ENE | 18% |
| Thursday Night | 52°F | Mostly Cloudy | 9 mph NE | 13% |
| Friday | 69°F | Mostly Sunny | 10 mph NE | 8% |
| Friday Night | 52°F | Partly Cloudy | 6 to 9 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Plymouth (42.371, -83.468). Updated through the day.
Growing snapshot for Plymouth
Last spring frost
Apr 24
First fall frost
Oct 24
Growing season
179 days
Hardiness zone
6b
More local growing data for Plymouth: nearby ZIP 48187 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
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Dearborn
Dearborn Heights
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Grosse Pointe Farms
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Grosse Pointe Woods
Hamtramck
Harper Woods
Highland Park
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River Rouge
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Wayne
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Climate data from the nearest NOAA station, Detroit Willow Run Ap, Mi (6.9 mi from Plymouth). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.