Brockton Weather in September

What's the weather like in Brockton (Massachusetts) in September 2025?

The climate in Brockton during September can be summarized as mild and a little damp.

September is in the fall / autumn in Brockton and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 11°C (52°F) is normal.

Brockton weather averages (imperial / metric)
Daytime temperature 22.7°C 72.8°F
Nightly temperature 11.4°C 52.4°F
Average temperature 17°C 62.6°F
Daily sunshine 8.2 hrs
Avg rainfall 93 mm 3.6 ins
Rainy days 8 days
Sea temperature 17.8°C 64.1°F
Humidity 73%
Windspeed 14.4kph 9 mph

On average September is the 4th driest month of the year in Brockton with around 93mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.2 hours of sunshine per day.

September temperatures in Brockton

Brockton average temperature in September

September rainfall

Brockton average rain in September

September hourly sunshine

Brockton average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Brockton in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Brockton weather stats

Brockton weather statistics
Hottest month: July 27.7°C 81.9°F
Driest month: June 78mm 3.1ins
Sunniest month: July 9.8hrs
Coldest month: January 1.5°C 34.7°F
Wettest month: November 115mm 4.5ins
Map showing location of Brockton (42.08343, -71.01838) Brockton map pin © Google

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