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
In September, the average high-temperature marginally decreases from a moderately hot 76.6°F (24.8°C) in August to an agreeable 69.8°F (21°C). East Sumner experiences a consistent average temperature of 50.2°F (10.1°C) throughout the nights in September.Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 9 days and typically collects 0.91" (23mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:05 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:23 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In East Sumner, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in East Sumner in September?
How many hours of daylight does East Sumner have in September?
What time are sunrise and sunset in September in East Sumner?
How many hours of sunshine does East Sumner have in September?
What is the UV index reading in September?
Average temperature in September
East Sumner, ME
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in September
East Sumner, ME
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
East Sumner, ME
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
East Sumner, ME
- Average humidity in September: 79%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
East Sumner, ME
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is June (1.93").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in September
East Sumner, ME
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in September
East Sumner, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
East Sumner, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
East Sumner, ME
- Average daylight in September: 12h and 3min
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 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
East Sumner, ME
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in September
East Sumner, 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
East Sumner, ME
- Average cloud cover in September: 35
The months with the most cloud cover are March and April (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility in September
East Sumner, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, November and December (6mi).
The months with the lowest visibility are February, March, April, May, June, July, August, September and October (5mi).
East Sumner, Maine, USA
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