September weather forecast and climate
Tremont, ME

Weather in September

September, the first month of the autumn, in Tremont, is also an enjoyable month, with average temperature fluctuating between 52.7°F (11.5°C) and 67.1°F (19.5°C).

Temperature

In Tremont, the average high-temperature marginally drops, from a warm 73.4°F (23°C) in August, to an enjoyable 67.1°F (19.5°C). The average low-temperature,, is 52.7°F (11.5°C).

Humidity

In Tremont, the average relative humidity in September is 79%.

Rainfall

In Tremont, it is raining for 10.5 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, in Tremont, Maine, there are 142.1 rainfall days, and 32.28" (820mm) of precipitation is accumulated.

Snowfall

In Tremont snow does not fall in June through September.

Ocean temperature

In Tremont, in September, the average water temperature is 55.9°F (13.3°C).
Note: Swimming in 55.9°F (13.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in September is 12.5h.

Sunshine

In Tremont, the average sunshine is 8.2h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in Tremont?

In Tremont, the average relative humidity in September is 79%.

How many days does it rain in September in Tremont?

In Tremont, in September, during 10.5 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

When it does not snow in Tremont?

June through September are months without snowfall in Tremont.

Does it snow in Tremont in September?

In Tremont, Maine, in September, it doesn't snow. In October, it regularly snows.

What is the ocean temperature in September in Tremont?

In Tremont, the average seawater temperature in September is 55.9°F (13.3°C). Swimming in 55.9°F (13.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in September in Tremont?

In September, the average length of the day in Tremont, Maine, is 12.5h.

How long on average sun shines in September in Tremont?

In September, the average sunshine in Tremont, Maine, is 8.2h.

What is the UV index intensity in September in Tremont?

In Tremont, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in September
Tremont, ME

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).

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Average pressure in September
Tremont, ME

Average pressure in September - Tremont, ME
  • Average pressure in September: 30.04"

The month with the highest atmospheric pressure is September (30.04").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in September
Tremont, ME

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).

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Average humidity in September
Tremont, ME

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%).

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Average rainfall in September
Tremont, ME

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").

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Average rainfall days in September
Tremont, ME

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).

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Average snowfall in September
Tremont, ME

Average snowfall in September - Tremont, ME
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.75").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Tremont, ME

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).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in September
Tremont, ME

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).

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Average daylight in September /
Average sunshine in September
Tremont, ME

Average daylight in September / Average sunshine in September - Tremont, ME
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in September: 8.2h

The month with the most sunshine is August (Average sunshine: 10.1h).
The month with the least sunshine is February (Average sunshine: 4.1h).

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Average sunshine days in September
Tremont, ME

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).

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Average UV index in September
Tremont, ME

Average UV index in September - Tremont, ME
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in September
Tremont, ME

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).
Months with the least cloud cover are August and September (Cloud cover 35).

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Average visibility in September
Tremont, ME

Average visibility in September - Tremont, ME
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
Months with the lowest visibility are July and August (5mi).

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