Boston Weather in October
October in Boston typically sees daytime highs of 17°C (63°F) and nighttime lows of 9°C (48°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Boston in October
Expect around 12 days of rain based on historical data, with 111 mm (4.4 in) average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Boston in October
Boston in October gets highs of 17°C (63°F) during the day and drops to 9°C (48°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Boston in October
The city usually sees around 207 hours of sunlight, indicating many sunny days , a great month for sightseeing.
Wind Speed in Boston in October
October sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.
Average water temperature in October
The water is 14°C (57°F) this month, cool enough to feel refreshing on a warm day, but cold enough that most people won't stay in for long without a wetsuit.Should you favor a climate that's both dry and comfortably warm, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Boston's climate page.
Boston Temperature in October
Min Temperature
9°C (48°F)
Max Temperature
17°C (63°F)
Water Temperature
14°C (57°F)
Chance of Rain
40%
Precipitation
111 mm (4.4 in)
Rainy days
12 days
Humidity
68%
Windspeed
6 m/s (12 knots)
Sunshine
207 hours
Percentage Sunshine
60%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Boston typically drop from around 19°C (66°F) at the start of October to approximately 14°C (57°F) by the end. Nights are cool, with lows typically ranging from 6°C (43°F) to 12°C (54°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for Boston in October
Browse day-by-day weather records for Boston spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Boston historical weather extremes in October
According to our 49 years of weather records for Boston, the following extremes were recorded between 1976 and 2025.
- The hottest October day on record in Boston reached 30°C (86°F) (October 6, 1990).
- On October 29, 2000, Boston saw its coldest October day with temperatures maxing out at 4°C (39°F).
- The coldest night in October in Boston was on October 31, 2020, with a minimum of -2°C (28°F).
Best Places in the United States of America in October
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →
perfect weather
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unpleasant
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What to Wear in Boston in October
Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 14°C (57°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Boston in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Boston's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Boston climate overview or explore weather in the United States of America.
