September weather forecastBangor, ME
September
Weather in September
September witnesses Bangor making strides towards autumn from the dissipating summer. Its average high temperature of 68.9°F (20.5°C) signals the onset of cooling trends post the warm summers. As the city embraces the fall season, deciduous trees hence start adopting hues of orange and yellow. The diminished daylight and reducing average wind speed of 5.9mph (9.5km/h) contribute to a calm and cozy atmosphere. This month reflects a beautiful transformation of weather and nature in Bangor, indicating the onset of autumn.Temperature
The beginning of September in Bangor brings a slight decrease in the average high-temperature, transitioning from a warm 76.6°F (24.8°C) in August to a pleasant 68.9°F (20.5°C). During September, the average low-temperature is a cool 50°F (10°C).Humidity
In Bangor, the average relative humidity in September is 79%.Rainfall
In Bangor, in September, it is raining for 10.5 days, with typically 1.93" (49mm) of accumulated precipitation. In Bangor, during the entire year, the rain falls for 148.5 days and collects up to 29.8" (757mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Bangor, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 5:58 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 6:17 pm EDT.
Sunshine
In Bangor, the average sunshine in September is 8.2h.UV index
In Bangor, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Undertake protective steps - Preventing sun damage is advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bangor, ME
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in September
Bangor, ME
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Bangor, ME
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Bangor, ME
- Average humidity in September: 79%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in September
Bangor, ME
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (1.61").
Average rainfall days in September
Bangor, ME
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Bangor, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bangor, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bangor, ME
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Bangor, ME
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is April (10.3 days).
Average UV index in September
Bangor, ME
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Bangor, ME
- Average cloud cover in September: 39
The months with the most cloud cover are February and March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Bangor, ME
- Average visibility in September: 5mi
The months with the highest visibility are October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August and September (5mi).
