Dedham (MA) Weather and Climate: A Comprehensive Guide
Dedham experiences great temperature shifts.
The city's weather can transition from warm days
to cold weather.
It also has a relatively rain/snowy climate with high levels of precipitation.
Let’s explore the climate details in depth to provide you with a complete overview.
Average maximum day and minimum night temperature
The climate in Dedham is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 29°C in July to a chilly 3°C in February.
Nighttime temperatures can drop, with average lows reaching -8°C in February. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Dedham has a notably wet climate with abundant precipitation, recording 1268 mm of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, December, sees around 132 mm of snow/rainfall, perfect for those who enjoy a bit of snow/rain now and then. The driest month, September, still receives a respectable 79 mm of rainfall.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
In Dedham, summer days are longer and more sunny, with daily sunshine hours peaking at 10.0 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.7 hours per average day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average water temperature
The mean water temperature over the year ranges from 4°C in February to 20°C in August.
Water temperature over the year
Average humidity
The relative humidity is high throughout the year in Dedham.
The city experiences its highest humidity in August, reaching 72%. In February, the humidity drops to its lowest level at 62%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed varies between 5 m/s and 7 m/s throughout the year. It is lowest in June, July, August and September and highest during January, February, March and December.
The mean monthly wind speed over the year (meters per second)
clear and no rain almost clear and no rain overcast and slight sleetForecast for Dedham (MA)
4 m/s
2 m/s
2 m/s
The best time of year to visit Dedham in the United States of America
During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
July has an average maximum temperature of 29°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 3°C.
December tops the wettest month list with 132 mm of rainfall.
September is the driest month with 79 mm of precipitation.
May is the sunniest month with an average of 301 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
