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 subtle shift in Yarmouth's weather is observed as August turns into September, with the average high temperature reducing from a warm 74.3°F (23.5°C) to a comfortable 67.8°F (19.9°C). September brings Yarmouth a consistent average low-temperature of 54.1°F (12.3°C).Humidity
In Yarmouth, the average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.5 days and typically collects 1.14" (29mm) of precipitation.Snowfall
In Yarmouth, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 29min.On the first day of September in Yarmouth, sunrise is at 6:05 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:23 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index in Yarmouth is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are September temperatures in Yarmouth?
What is the average humidity in September in Yarmouth?
What is the driest month in Yarmouth?
How much does it rain in Yarmouth in September?
When it does not snow in Yarmouth?
How many hours of daylight does Yarmouth have in September?
What time are sunrise and sunset in September in Yarmouth?
How many hours of sunshine does Yarmouth have in September?
How high is the UV index in September in Yarmouth?
Average temperature in September
Yarmouth, ME
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is July (74.7°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Yarmouth, ME
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Yarmouth, ME
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Yarmouth, ME
- Average humidity in September: 79%
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Yarmouth, ME
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is October (2.28").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days in September
Yarmouth, ME
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Yarmouth, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Yarmouth, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Yarmouth, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Yarmouth, ME
- Average sunshine days in September: 18.5 days
The months with the most sunshine days are January and September (18.5 days).
The month with the least sunshine days is April (13 days).
Average UV index in September
Yarmouth, 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, November and December (UV index 2).
Average cloud cover in September
Yarmouth, ME
- Average cloud cover in September: 32
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Yarmouth, ME
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Yarmouth, Maine, USA
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