Climate Overview
The climate in Logan International Airport is cool. The average annual temperature is 9°C and approximately 459mm of precipitation falls per year. April is the wettest month, receiving around 67mm of rainfall. Logan International Airport 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 February, January, December, when temperatures can drop to -9°C. Snowfall occurs from January to December, with around 135cm accumulating over the season.
Temperature
Logan International Airport has a wide annual temperature range, spanning 41°C from the coldest to warmest months. The warmest month is July, when average highs reach 32°C and the mean temperature sits around 23°C. The coldest month is February, when overnight lows fall to -9°C and the daily average is -5°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 9°C shift in average temperatures.
Precipitation
Logan International Airport is a relatively dry area, receiving approximately 459mm of precipitation annually, which averages out to around 38mm per month. The wettest month is April, averaging 67mm of rainfall. May and June also tend to see above-average precipitation. The driest month is August, with just 16mm. That's 50mm less than April, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 135cm accumulating over the season. February typically sees the most snow at around 27cm.
Wind
Logan International Airport is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
83 days until Autumn
It is currently summer in Logan International Airport, which began on June 21, 2026. Logan International Airport 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 32°C, while the coldest stretch bottoms out in February near -9°C. Autumn is next, beginning on September 23, 2026 — 83 days from now.
Spring
Temperatures range from -2 to 21°C. Precipitation is moderate at around 160mm for the season, averaging 53mm per month. Winds are generally light, averaging 4km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 13 to 32°C. Rainfall is relatively light, with around 102mm over the season and a monthly average of 34mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from -1 to 24°C. Rainfall is relatively light, with around 116mm over the season and a monthly average of 39mm. Expect around 30cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -9 to 2°C. Rainfall is relatively light, with around 81mm over the season and a monthly average of 27mm. Expect around 69cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Best Time to Visit
The best time to visit Logan International Airport is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 38mm per month. By contrast, February can be quite cold with temperatures dropping to -9°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Logan International Airport 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.
