Boston Weather in September: Temperature, Precipitation, Wind
In September, Boston has an average temperature of 19.5°C (67.1°F), with highs of 22.6°C (72.7°F) and lows of 16.7°C (62.0°F). The average daily temperature “feels like” around 19.6°C (67.3°F). The humidity is relatively high at an average of 76.1%. Boston receives an average of 3.25 inches of precipitation throughout the month, with a 56.7% chance of precipitation on average. There are 17.0 days with some rainfall, and it is typically the most common type of precipitation, although snow is possible. The wind is moderately strong, with an average speed of 23.8 km/h (14.8 mph) and gusts up to 33.1 km/h (20.6 mph). The barometric pressure is around 1017.7 mb (30.05 inHg), and the sky is mostly cloudy, with an average cloud cover of 66.1%. The average visibility is 14.5 km (9.0 miles). September in Boston has a moderate risk of severe weather, with an average severe weather index of 17.0.
What is the temperature in Boston in September?
Average air temperature in Boston is 19.5°C (67.1°F) in September. The outside temperature in Boston feels like 19.6°C (67.3°F) on a typical September day. The highest average temperature during sunny days is 22.6°C (72.7°F) and feels like 23.2°C (73.8°F). The lowest average temperature after dark is 16.7°C (62°F) which feels like 16.6°C (61.9°F).
How hot is Boston in September?
The hot temperature in September in Boston rises to 31.8°C (89.2°F) on sunny days with low cloud coverage and 76.1% humidity. During hottest days of September it feels like 35.4 °C (95.7°F). The average maximum temp in Boston is 22.6°C (95.7°F) during day time in September.
How cold is Boston in September?
The coldest temp in Boston in September drops to 9.2°C (48.6°F) during the cold nights. With 23.8km/h (14.8mph) winds and 76.1% humidity it feels like 7.5°C (45.5°F) on the coldest nights. The average minimum temperature is 16.7°C (62°F) during night time in September.
Does it rain in Boston in September?
Yes, it rains for 17 days in Boston, United States in September averaging 3.25 mm of precipitation. Boston has a 56.7% chance for rain throughout the entire month of September.
How much does it rain in Boston throughout September?
Boston has 3.25 mm (0.13 inch) of rain per day on average in September. It rains for an average of 17 days out of the entire month.
Is Boston windy in September?
The average speed of wind in Boston, United States during September is 23.8km/h (14.8mph) and average windgust is 33.1km/h (20.6mph). On some days in September wind can reach up to 43.9km/h (27.3mph).
What is the direction of the wind in Boston in September?
Most days of September the wind is blowing from Southeast direction in Boston.
What are the humidity levels in Boston in September?
The average humidity levels in Boston in September are 76.1%. Daily humidity levels in Boston range from 55.6% to 96.3% during September.
How many hours of daylight are in Boston in September?
Boston has 12 hours 28 minutes of daylight in September on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Boston in September is at 6:24:28 and the sunset is at 18:53:27.
What is the cloud coverage in Boston in September?
Clouds cover 66.1% of the sky on average throughout September in Boston. The cloud coverage ranges from 11.8% to 100% depending on the day of the month.
What is the UV level in September in Boston?
The average UV index in Boston is 4.8 in September. UV levels change throughout the month and range from 1 to 8.
What is the solar radiation in Boston in September?
The average solar radiation is 117.7 W/m2 (Watts per square meter) in Boston during September. However solar radiation levels change throughout the month and range from 20.2 W/m2 to 213.3 W/m2.
What is the solar energy during September in Boston?
The average solar energy during September in Boston is 10.2 MJ/m2 (megajoules per square metre). Solar energy ranges from 1.7 MJ/m2, to 18.5 MJ/m2 during September.
Are there severe weather risks in Boston in September?
Yes, there is a 17% risk for severe weather in Boston, United States in September.
What is the air pressure in Boston in September?
On average the air pressure in Boston in September is 1017.7 mb (millibars). Throughout the month the sea level pressure ranges from 1005.8 mb to 1029.1 mb.
What is the visibility in Boston in September?
The average daylight visibility in Boston in September is 14.5 km (9 miles). Depending on the precipitation the visibility ranges from 4.6 km (2.9 miles) to 16 km (9.9 miles) throughout September.
What is the dew point in Boston in September?
The average dew point in Boston during September is 14.8°C (58.7°F).
Where is the data for Boston climate in September coming from?
The climate data for Boston, Massachusetts, United States in September is collected from the following weather stations.
- Northeastern University MA US WEATHERSTEM
- BEDFORD HANSCOM FIELD, MA US
- BOSTON, MA US
- NORWOOD MEMORIAL AIRPORT, MA US
- KB1DML Cambridge MA US
- FW2140 Somerville MA US
- KBED
- KBOS
- KOWD