September weather forecast
Old Town, ME

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Weather in September

September starts the onset of autumn in Old Town, with temperatures falling to an average high of 68.9°F (20.5°C). The leaf-peeping season begins as the city dazzlingly transforms into various hues of red, orange, and yellow. Even though no snowfall is recorded in this month, the crisp weather reminds the locals that winter is fast approaching.

Temperature

September in Old Town, Maine, brings a slight decrease in the average high-temperature, shifting from a warm 77.2°F (25.1°C) in August to an agreeable 68.9°F (20.5°C). September nights cool down to an average low-temperature of 50°F (10°C).

Humidity

In Old Town, Maine, the average relative humidity in September is 78%.

Rainfall

In Old Town, during September, the rain falls for 10.5 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Old Town, Maine, during the entire year, the rain falls for 148.7 days and collects up to 29.84" (758mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Old Town, the average length of the day in September is 12h and 31min.
On the first day of the month, sunrise is at 5:57 am and sunset at 7:11 pm. On the last day of September, in Old Town, sunrise is at 6:32 am and sunset at 6:16 pm EDT.

Sunshine

In September, the average sunshine in Old Town is 8.1h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What are the temperatures in Old Town in September?

September temperatures in Old Town vary between a high-temperature of 68.9°F (20.5°C) and a low-temperature of 50°F (10°C).

What is the average humidity in September in Old Town?

In Old Town, the average relative humidity in September is 78%.

How many days does it rain in September in Old Town?

In Old Town, during September, the rain falls for 10.5 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When it does not snow in Old Town?

In Old Town, Maine, snow does not fall in June through September.

Does it snow in Old Town in September?

In Old Town, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Old Town have in September?

In Old Town, Maine, the average day length in September is 12h and 31min.

What time are sunrise and sunset in September in Old Town?

On the first day of September in Old Town, sunrise is at 5:57 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 6:16 pm EDT.

How long on average sun shines in September in Old Town?

In Old Town, the average sunshine duration in September is 8.1h.

What is the UV index intensity in September in Old Town?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
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
Old Town, ME

Average temperature in September - Old Town, ME
  • Average high temperature in September: 68.9°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (26.6°F).

  • Average low temperature in September: 50°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

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Average pressure in September
Old Town, ME

Average pressure in September - Old Town, 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
Old Town, ME

Average wind speed in September - Old Town, ME
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in September
Old Town, ME

Average humidity in September - Old Town, ME
  • Average humidity in September: 78%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in September
Old Town, ME

Average rainfall in September - Old Town, ME
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (1.61").

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Average rainfall days in September
Old Town, ME

Average rainfall days in September - Old Town, ME
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in September
Old Town, ME

Average snowfall in September - Old Town, ME
  • Average snowfall in September: 0"

The month with the highest snowfall is January (8.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Old Town, ME

Average snowfall days in September - Old Town, ME
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Old Town, ME

Average daylight in September / Average sunshine in September - Old Town, 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 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 54min).

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Average sunshine days in September
Old Town, ME

Average sunshine days in September - Old Town, ME
  • Average sunshine days in September: 17.1 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is April (10.1 days).

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Average UV index in September
Old Town, ME

Average UV index in September - Old Town, 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
Old Town, ME

Average cloud cover in September - Old Town, ME
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 39).

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Average visibility in September
Old Town, ME

Average visibility in September - Old Town, ME
  • Average visibility in September: 5mi

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

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Old Town, Maine, USA

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