Williamstown, MA Weather - Forecast & Monthly Averages

Get 300+ Local Insights for Any Address in Williamstown, MA

Get Access to 300+ Local Data Points

TEMPERATURE	19
HUMIDITY
PRESSURE	102031.89
WIND COND.	280 20.4

Weather Quick Facts

The highest monthly average temperature in Williamstown for July is 69.9 degrees
The lowest monthly average temperature in Williamstown for January is 24.7 degrees
The most monthly precipitation in Williamstown occurs in June with 5 inches
The air quality index in Williamstown is 17% better than the national average
The pollution index in Williamstown is 140% worse than the national average

Compare Williamstown, MA Weather

Compare Neighborhoods & Addresses

Why stop at city-to-city? With Local Insights, you can compare neighborhoods, zip codes, or even exact addresses. Access 300+ hyperlocal data points—from schools and crime to housing and amenities—to see which area is the better fit.

UNLOCK FULL COMPARISON →

Write a review to give others more information about this area.

See all Williamstown poll results

Williamstown Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	16°F	34°F	25°F	2.3"
February	16°F	35°F	25°F	2.1"
March	24°F	45°F	34°F	2.8"
April	35°F	59°F	47°F	3.0"
May	45°F	71°F	58°F	4.0"
June	54°F	77°F	65°F	5.0"
July	59°F	82°F	70°F	4.5"
August	56°F	79°F	67°F	5.0"
September	50°F	74°F	61°F	4.3"
October	41°F	62°F	50°F	4.7"
November	30°F	50°F	40°F	2.4"
December	23°F	39°F	31°F	3.4"

The best places in Massachusetts

Here are the best places to live in Massachusetts

Safest States In The US

See the best places to live in Williamstown

These are the largest cities in Massachusetts

Williamstown air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Williamstown	Massachusetts	National
Air quality index	35	40	42
Pollution index	6,535,100	8,399,610	2,726,193

Williamstown air quality

Measurement	Total
Days measured	365
Days with good air quality	345
Days with moderate air quality	20
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.050%
Carbon Tetrachloride	0.010%
Lead	0.090%
Mercury	0.050%

Average monthly Williamstown temperature with heat index

Williamstown monthly precipitation with daily maximum

Williamstown monthly snow depth with daily maximum

Williamstown monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Old Bennington, VT	218	35	30.0%
North Adams, MA	12,897	35	30.0%
Hoosick Falls, NY	3,361	35	30.0%
Readsboro, VT	309	35	30.0%
Bennington, VT	8,539	35	30.0%
Williamstown, MA	4,565	35	30.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Hollister, MO	4,564	18	64.0%
Rio Communities, NM	4,566	53	6.0%
Cowichan Valley E, BC	4,562	n/a
Portola Valley, CA	4,568	43	14.0%
Humboldt, IA	4,568	37	26.0%
Williamstown, MA	4,565	35	30.0%

Source: The Williamstown, MA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.