Plymouth (MI) Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from comfortable to very cold in Plymouth. Average daytime temperatures reach a comfortable 29°C (84°F) in July. In January, the coolest month of the year, temperatures drop to a very cold 0°C (32°F).

At night, temperatures range from around 17°C (63°F) in July to -9°C (16°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Plymouth has a moderate amount of precipitation, averaging 938 mm (37 in) of rain/snowfall annually. Plymouth experiences moderate seasonal variation in rainfall, with monthly averages ranging from 107 mm (4.2 in) in June, the wettest month, and 59 mm (2.3 in) in February, the driest month. For more details, please visit our Plymouth Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Plymouth can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.6 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Plymouth.

The city experiences its highest humidity in January, reaching 74%. In May, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year