Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a warm 76.3°F (24.6°C) in August to a pleasant 68.9°F (20.5°C). The average low-temperature of 48.4°F (9.1°C) is witnessed during September.Humidity
In Brighton, Maine, the average relative humidity in September is 79%.Rainfall
In Brighton, in September, it is raining for 9.6 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 142.6 rainfall days, and 28.5" (724mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:15 pm. On the last day of September, in Brighton, sunrise is at 6:36 am and sunset at 6:20 pm EDT.
Sunshine
In Brighton, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Brighton have in September?
What is the UV index reading in September?
Average temperature in September
Brighton, ME
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 48.4°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in September
Brighton, ME
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Brighton, ME
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Brighton, ME
- Average humidity in September: 79%
The months with the highest relative humidity are February and March (86%).
The month with the lowest relative humidity is November (77%).
Average rainfall in September
Brighton, ME
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is April (3.23").
The driest month (with the least rainfall) is July (1.38").
Average rainfall days in September
Brighton, ME
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
Brighton, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brighton, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Brighton, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Brighton, ME
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in September
Brighton, 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, April, October, November and December (UV index 2).
Average cloud cover in September
Brighton, ME
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is September (Cloud cover 37).
Average visibility in September
Brighton, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (5mi).
The month with the lowest visibility is August (4mi).
Brighton, Maine, USA
Weather forecast for your location
2. Allow the app to use your location