The climate in Quincy during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Quincy and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 19°C (67°F) is normal.
Daytime temperature | 31.1°C 87.9°F |
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Nightly temperature | 19.4°C 66.8°F |
Average temperature | 25.2°C 77.4°F |
Daily sunshine | 8.7 hrs |
Avg rainfall | 126 mm 5 ins |
Rainy days | 10 days |
Sea temperature | 28.5°C 83.3°F |
Humidity | 78% |
Windspeed | 10.4kph 7 mph |
On average September is the 6th wettest month of the year in Quincy with around 126mm 5 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.7 hours of sunshine per day.
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 Quincy in September 2025.
Best places to visit in September
Hottest month: | July | 32.6°C 90.7°F |
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Driest month: | October | 75mm 3ins |
Sunniest month: | April | 10.2hrs |
Coldest month: | January | 16°C 60.8°F |
Wettest month: | July | 188mm 7.4ins |