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
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 75.9°F (24.4°C) in August to an agreeable 68°F (20°C). During September, South Dover records a consistent average nighttime temperature of 48.6°F (9.2°C).Humidity
In South Dover, the average relative humidity in September is 79%.Rainfall
In South Dover, in September, during 12.2 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, there are 154.3 rainfall days, and 32.68" (830mm) of precipitation is accumulated.Snowfall
In South Dover, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September in South Dover, sunrise is at 5:59 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 6:18 pm EDT.
Sunshine
The average sunshine in September in South Dover, Maine, is 8.1h.UV index
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 average individuals.Note: In September, the UV index of 4 transforms into the following advice:
Exercise prevention - Warding off sunburn is urged. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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 in South Dover?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does South Dover have in September?
What is the UV index intensity in September?
Average temperature in September
South Dover, ME
- Average high temperature in September: 68°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 (23.9°F).
- Average low temperature in September: 48.6°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 (10.8°F).
Average pressure in September
South Dover, 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 (29.9"Hg).
Average wind speed in September
South Dover, ME
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
South Dover, ME
- Average humidity in September: 79%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
South Dover, ME
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is July (1.89").
Average rainfall days in September
South Dover, ME
- Average rainfall days in September: 12.2 days
The months with the highest number of rainy days are May and July (16.7 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in September
South Dover, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (11.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
South Dover, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
South Dover, 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 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
South Dover, ME
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in September
South Dover, 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
South Dover, ME
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 40).
Average visibility in September
South Dover, ME
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).
South Dover, Maine, USA
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