Plymouth receives its highest rainfall in Mar, while humidity peaks during winter months.
🌧️ Wettest:Mar — 120 mm☀️ Driest:Jul — 87 mm
💧 Humidity peaks at 85% in Jan · annual avg 81%
🌍 Climate Summary
Avg Annual Temp:51.3°F
Avg Annual Rainfall:1222 mm
Avg Humidity:81%
Data Period:1981 – 2025
Plymouth Climate Overview
Plymouth has a temperate climate with warm summers and freezing winters.
Temperatures peak in Jul and drop to their lowest in Jan,
while rainfall is highest during spring and early summer months.
Humidity remains high throughout the year, especially during winter months, creating cold and damp conditions.
📈 Yearly Trends
The warmest year in Plymouth's recorded history was 2012
(avg: 54.5°F),
while the coldest year was 1986
(avg: 48.4°F),
based on annual average temperatures.
📊 Key Climate Trends
🌡️ Plymouth's temperature has remained relatively stable over the past decade
📈 Minimum temperatures show a slight warming trend in recent years
🌧️ Rainfall varies year-to-year without a clear long-term trend
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °F
Plymouth's temperatures has remained relatively stable over the past decade.
The highest recorded temperature reached
93.8°F in Aug 2002,
while the lowest dropped to
-4.6°F in Feb 2023.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Plymouth shows noticeable variation. Rainfall varies year-to-year without a clear long-term trend.
Based on 45 years of data (1981–2025), Jul is typically the hottest month in Plymouth, Massachusetts, with average high temperatures around 85.8°F.
What is the coldest month in Plymouth?▼
Jan is the coldest month in Plymouth, with average low temperatures around 9.9°F.
What is the rainiest month in Plymouth?▼
Mar receives the most rainfall with approximately 120 mm, while Jul is the driest with 87 mm.
What was the highest temperature ever recorded in Plymouth?▼
The highest recorded temperature was 93.8°F in Aug 2002. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Plymouth?▼
The lowest recorded temperature was -4.6°F in Feb 2023.
How many years of data does this page cover?▼
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
How much sunlight does Plymouth get?▼
Plymouth receives the most sunlight in Jun with an average solar radiation of 5.96 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in Massachusetts.
Where does this weather data come from?▼
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.