Climate Overview
The climate in Great Barrington is cool. The average annual temperature is 9°C and approximately 1230mm of precipitation falls per year. Great Barrington receives a notable amount of rainfall throughout the year, including during its driest month. Great Barrington is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to -7°C. Snowfall occurs from January to December, with around 127cm accumulating over the season.
Temperature
Temperatures in Great Barrington vary considerably across the year, with a 34°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 22°C. The coldest month is January, when overnight lows fall to -7°C and the daily average is -4°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.
Precipitation
Great Barrington is a fairly wet location, receiving approximately 1230mm of precipitation annually, which averages out to around 103mm per month. The wettest month is July, averaging 119mm of rainfall. December and October also tend to see above-average precipitation. The driest month is November, with just 84mm. That's 35mm less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 127cm accumulating over the season. March typically sees the most snow at around 29cm.
Wind
Great Barrington is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 20km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 19km/h in winter, 18km/h in spring, 14km/h in summer, 16km/h in autumn.
Seasons
83 days until Summer
It is currently spring in Great Barrington, which began on March 20, 2026. Great Barrington is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 27°C, while the coldest stretch bottoms out in January near -7°C. Summer is next, beginning on June 21, 2026 — 83 days from now.
Spring
Temperatures range from -3 to 20°C. Precipitation is moderate at around 298mm for the season, averaging 99mm per month. Winds are moderate at around 18km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 14 to 27°C. Rainfall is heavy, totalling around 323mm across the season with a monthly average of 108mm. Winds are generally light, averaging 14km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 1 to 22°C. Rainfall is heavy, totalling around 308mm across the season with a monthly average of 103mm. Expect around 11cm of snow accumulation during this period. Winds are moderate at around 16km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -7 to 4°C. Precipitation is moderate at around 301mm for the season, averaging 100mm per month. Expect around 79cm of snow accumulation during this period. Winds are moderate at around 19km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Great Barrington based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
