Climate Insights for Boston

The climate in Boston is temperate. The average annual temperature is 11°C and approximately 1,151 mm of precipitation falls per year. Boston receives a notable amount of rainfall throughout the year, including during its driest month. Boston 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 -3°C. Snowfall occurs from January to December, with around 115cm accumulating over the season.The climate in Boston is temperate. The average annual temperature is 52°F and approximately 45.3 in of precipitation falls per year. Boston receives a notable amount of rainfall throughout the year, including during its driest month. Boston 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 27°F. Snowfall occurs from January to December, with around 45in accumulating over the season.

Temperatures in Boston vary considerably across the year, with a 30°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 23°C. The coldest month is January, when overnight lows fall to -3°C and the daily average is 0°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.Temperatures in Boston vary considerably across the year, with a 54°F difference between the coldest and warmest months. The warmest month is July, when average highs reach 81°F and the mean temperature sits around 74°F. The coldest month is January, when overnight lows fall to 27°F and the daily average is 32°F. Daily temperature variation is modest, with an average difference of 13°F between highs and lows. The sharpest temperature change occurs between October and November, with a 11°F shift in average temperatures.

Boston is a moderately rainy area, receiving approximately 1,151 mm of precipitation annually, which averages out to around 96 mm per month. The wettest month is December, averaging 122 mm of rainfall. October and April also tend to see above-average precipitation. The driest month is August, with just 71 mm. That's 50 mm less than December, 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 115cm accumulating over the season. February typically sees the most snow at around 35cm.Boston is a moderately rainy area, receiving approximately 45.3 in of precipitation annually, which averages out to around 3.8 in per month. The wettest month is December, averaging 4.8 in of rainfall. October and April also tend to see above-average precipitation. The driest month is August, with just 2.8 in. That's 2 in less than December, 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 45in accumulating over the season. February typically sees the most snow at around 14in.

Boston is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 11km/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 16km/h in winter, 15km/h in spring, 12km/h in summer, 14km/h in autumn.Boston is moderately windy, with an average annual wind speed of 9mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is January, averaging 11mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 7mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4mph 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 10mph in winter, 9mph in spring, 7mph in summer, 9mph in autumn.

The best time to visit Boston is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 83 mm per month. By contrast, January can be quite cold with temperatures dropping to -3°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.The best time to visit Boston is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 70°F with modest rainfall averaging 3.3 in per month. By contrast, January can be quite cold with temperatures dropping to 27°F. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Boston 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.The table below shows monthly climate averages for Boston based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.