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 sea temperature 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
With the onset of September, the average high-temperature subtly recedes from August's moderately hot 73.4°F (23°C) to a refreshing 67.1°F (19.5°C). In Tremont, in September, the average low-temperature is a cool 52.7°F (11.5°C).Humidity
The average relative humidity in September is 79%.Rainfall
In Tremont, during September, the rain falls for 10.5 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, in Tremont, there are 142.1 rainfall days, and 32.28" (820mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Tremont.Ocean temperature
In Tremont, Maine, in September, the average water temperature is 55.9°F (13.3°C).Note: Swimming in 55.9°F (13.3°C) is deemed hazardous. Exposure to temperatures below 50°F (10°C) leads to immediate severe cold shock and hyperventilation.
Daylight
The average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 5:57 am and sunset at 7:09 pm. On the last day of September, in Tremont, sunrise is at 6:30 am and sunset at 6:15 pm EDT.
Sunshine
The average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Tremont, Maine, is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Tremont in September?
What is the average humidity in September in Tremont?
How many days does it rain in September in Tremont?
When it does not snow in Tremont?
Does it snow in Tremont in September?
What is the water temperature in September in Tremont?
What is the average length of the day in September in Tremont?
What time are sunrise and sunset in September in Tremont?
How many hours of sunshine does Tremont have in September?
What is the UV index reading in September in Tremont?
Average temperature in September
Tremont, ME
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in September
Tremont, 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
Tremont, ME
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Tremont, ME
- Average humidity in September: 79%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Tremont, ME
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in September
Tremont, ME
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is April (15.5 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in September
Tremont, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Tremont, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Tremont, ME
- Average sea temperature in September: 55.9°F
The best month for swimming (with the highest average sea temperature) is August (56.8°F).
The coldest month (with the lowest average sea temperature) is March (38.6°F).
Average daylight in September /
Average sunshine in September
Tremont, 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 1min
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 6min).
Average sunshine days in September
Tremont, ME
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in September
Tremont, 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
Tremont, ME
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in September
Tremont, ME
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Tremont, Maine, USA
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