Plymouth, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plymouth, a city in Marshall County, Indiana.
This Afternoon
67°F
Isolated Rain Showers
Isolated rain showers before 3pm. Mostly cloudy. High near 67, with temperatures falling to around 60 in the afternoon. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
7-day forecast for Plymouth
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Isolated Rain Showers | 10 to 15 mph SW | 22% |
| Tonight | 47°F | Mostly Cloudy | 10 to 15 mph SW | 14% |
| Thursday | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph SW | 23% |
| Thursday Night | 41°F | Rain Showers Likely | 5 to 10 mph NW | 60% |
| Friday | 50°F | Chance Rain Showers | 5 to 15 mph NW | 52% |
| Friday Night | 35°F | Chance Rain Showers | 5 to 10 mph NW | 34% |
| Saturday | 51°F | Partly Sunny | 5 to 10 mph NW | 5% |
| Saturday Night | 30°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 32°F | Mostly Clear | 5 mph W | 1% |
| Monday | 59°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 61°F | Sunny | 5 mph W | 0% |
| Tuesday Night | 35°F | Mostly Clear | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Plymouth (41.349, -86.319). Updated through the day.
Growing snapshot for Plymouth
Last spring frost
Apr 25
First fall frost
Oct 21
Growing season
178 days
Hardiness zone
6a
More local growing data for Plymouth: nearby ZIP 46563 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Argos
Bourbon
Bremen
Culver
Donaldson
Koontz Lake
La Paz
Lake of the Woods
Talma
Teegarden
Tippecanoe
Tyner
Climate data from the nearest NOAA station, Plymouth, In (1.2 mi from Plymouth). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.