Weather in Boston in October 2025
Average weather
Average temperature in Boston in October
The temperature in October is +19°C on average, with a range between a maximum of +28°C during the day and a minimum of +3°C at night.
The average maximum temperature goes down 56% by the end of the month, compared with the beginning of the month, from +23°C to +9°C.
Is Boston warm or cold in October?
Boston is typically mild in October.
Maximum temperatures go down compared to the previous month from +22°C to +17°C. The minimum temperature also goes down from +15°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how October is compared to other months in Boston:
Water temperature in Boston in October
Water in Boston in October is Cold. It varies from +12°C to +18°C, with an average of +15°C. This is almost similar to the air temperature, which averages +17°C.
In October, water temperatures are average relative to the rest of the year:
Can you swim in Boston in October?
Climate in Boston in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +22°C | +17°C | +11°C | ||||
| Min. temperature | ||||||
| +3°C | -3°C | -13°C | ||||
| Max. temperature | ||||||
| +35°C | +29°C | +25°C | ||||
| Rainfall | ||||||
| 98 mm | 110 mm | 94 mm | ||||
| Wind | ||||||
| 3 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +18°C | +15°C | +11°C | ||||
| Humidity | ||||||
| 72% | 70% | 66% | ||||
| Air pressure | ||||||
| 1017 HPa | 1016 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 7 | 7 | 5 | ||||
| Cloudy days | ||||||
| 10 | 11 | 12 | ||||
| Rainy days | ||||||
| 12 | 13 | 12 | ||||
| Snowy days | ||||||
| 0 | 0 | 1 | ||||
October weather is still as good as in September. It’s getting colder in October. From +22°C in the day, the average maximum temperature lowers to +17°C. Prepare for more rain. Average rainfall goes from 98 mm to 110 mm. It feels drier, as humidity decreases from 72% to 70%. Winds are stronger in comparison to September, going up from 3 m/s to 4 m/s on average. The amount of sunny days stay about the same, averaging 7 sunny days during the month.
Next month (November) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Boston is gradually increasing during October, going from 2 m/s to 4 m/s over the course of the month.
Rain
How was the weather last October in Boston?
Climate Change over Years
The climate in Boston in October has not changed much over the last 43 years.
The average temperature was the lowest in 1992 (+14°C) and the highest in 2022 (+17°C). The driest year was 2016 with only 702 mm of rainfall, and the wettest year was 2021 with 2022 mm.
FAQ
Is October a good time to visit Boston?
Can you sunbathe in Boston in October?
Can you swim in Boston in October?
Is Boston rainy in October?
Is it sunny in Boston in October?
Other cities in USA
Monthly weather in Boston
Source of the data
For this page, we’ve looked at the typical weather in Boston, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.