September weather forecast
Saint George, ME

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Weather in September

The first month of the autumn, September, is still a refreshing month in Saint George, Maine, with an average temperature varying between 63.3°F (17.4°C) and 55.6°F (13.1°C).

Temperature

During the shift to September, Saint George records a mild decrease in average high-temperature, moving from an agreeable 68.7°F (20.4°C) in August to a comfortable 63.3°F (17.4°C). Saint George, during September nights, experiences a subtle shift to a low average of 55.6°F (13.1°C) from the day's heat.

Humidity

In September, the average relative humidity is 81%.

Rainfall

The month with the least rainfall in Saint George is September, when the rain falls for 10.4 days and typically collects 1.81" (46mm) of precipitation.

Snowfall

May through October are months without snowfall.

Ocean temperature

In September, the average ocean temperature is 58.3°F (14.6°C).
Note: Entering waters of 58.3°F (14.6°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.

Daylight

In September, the average length of the day in Saint George, Maine, is 12h and 30min.
On the first day of September, sunrise is at 6:00 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 6:18 pm EDT.

Sunshine

In September, the average sunshine in Saint George, Maine, is 8.5h.

UV index

In Saint George, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 4 in September translates into these instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the average September temperature in Saint George?

The high-temperature, in September, in Saint George, records 63.3°F (17.4°C), while the low-temperature is 55.6°F (13.1°C).

What is the average humidity in September in Saint George?

In Saint George, the average relative humidity in September is 81%.

What is the driest month in Saint George?

The month with the least rainfall is September, when the rain falls for 10.4 days and typically collects 1.81" (46mm) of precipitation.

How much does it rain in Saint George in September?

In September, in Saint George, Maine, the rain falls for 10.4 days. Throughout September, 1.81" (46mm) of precipitation is accumulated.

When it does not snow in Saint George?

In Saint George, Maine, snow does not fall in May through October.

What is the water temperature in September in Saint George?

In Saint George, Maine, in September, the average water temperature is 58.3°F (14.6°C). Swimming in 58.3°F (14.6°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Saint George have in September?

In September, the average day length is 12h and 30min.

When are sunrise and sunset in September in Saint George?

In September, on the first day of the month, sunrise is at 6:00 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 6:18 pm EDT.

How many hours of sunshine does Saint George have in September?

The average sunshine duration in September in Saint George, Maine, is 8.5h.

What is the UV index reading in September in Saint George?

In September, the average daily maximum UV index in Saint George is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Saint George, ME

Average temperature in September - Saint George, ME
  • Average high temperature in September: 63.3°F

The warmest month (with the highest average high temperature) is August (68.7°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in September: 55.6°F

The month with the highest average low temperature is August (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in September
Saint George, ME

Average pressure in September - Saint George, 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).

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Average wind speed in September
Saint George, ME

Average wind speed in September - Saint George, ME
  • Average wind speed in September: 9.6mph

The windiest month (with the highest average wind speed) is January (14.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).

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Average humidity in September
Saint George, ME

Average humidity in September - Saint George, ME
  • Average humidity in September: 81%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (75%).

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Average rainfall in September
Saint George, ME

Average rainfall in September - Saint George, ME
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in September
Saint George, ME

Average rainfall days in September - Saint George, ME
  • Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in September
Saint George, ME

Average snowfall in September - Saint George, ME
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Saint George, ME

Average snowfall days in September - Saint George, ME
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in September
Saint George, ME

Average sea temperature in September - Saint George, ME
  • Average sea temperature in September: 58.3°F

The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).

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Average daylight in September /
Average sunshine in September
Saint George, ME

Average daylight in September / Average sunshine in September - Saint George, 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 3min

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 30min).

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Average sunshine days in September
Saint George, ME

Average sunshine days in September - Saint George, ME
  • Average sunshine days in September: 18 days

The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (11.5 days).

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Average UV index in September
Saint George, ME

Average UV index in September - Saint George, 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).

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Average cloud cover in September
Saint George, ME

Average cloud cover in September - Saint George, ME
  • Average cloud cover in September: 32

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in September
Saint George, ME

Average visibility in September - Saint George, 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).

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Saint George, Maine, USA

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