September weather forecast
Limestone, ME

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Weather in September

The first month of the autumn, September, is still a comfortable month in Limestone, Maine, with an average temperature fluctuating between 45.7°F (7.6°C) and 64.4°F (18°C).

Temperature

September indicates a minor shift in the average high-temperature, from August's agreeable 73.2°F (22.9°C) to a refreshing 64.4°F (18°C). Nighttime temperature in Limestone experiences an average drop to a chilly 45.7°F (7.6°C) in September.

Humidity

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

Rainfall

In Limestone, in September, during 12.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, there are 139.1 rainfall days, and 24.21" (615mm) of precipitation is accumulated.

Snowfall

In Limestone, snow does not fall in June through September.

Daylight

In Limestone, the average length of the day in September is 12h and 32min.
On the first day of September, sunrise is at 5:51 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 6:12 pm EDT.

Sunshine

In Limestone, Maine, the average sunshine in September is 7.1h.

UV index

In September, the average daily maximum UV index in Limestone is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Take precautions - Protection against sun damage is advised. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

What is the average September temperature in Limestone?

The high-temperature during September is 64.4°F (18°C) and the low-temperature is 45.7°F (7.6°C).

What is the average humidity in September in Limestone?

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

How many days does it rain in September in Limestone?

In Limestone, in September, during 12.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

When it does not snow in Limestone?

June through September are months without snowfall.

Does it snow in Limestone in September?

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

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

In September, the average day length in Limestone, Maine, is 12h and 32min.

When is the sunrise / sunset in September in Limestone?

On the first day of September in Limestone, sunrise is at 5:51 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 6:12 pm EDT.

How many hours of sunshine does Limestone have in September?

In Limestone, Maine, the average sunshine duration in September is 7.1h.

What is the UV index intensity in September in Limestone?

In September, the average daily maximum UV index in Limestone, Maine, is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from 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
Limestone, ME

Average temperature in September - Limestone, ME
  • Average high temperature in September: 64.4°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 (19.2°F).

  • Average low temperature in September: 45.7°F

The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is January (3.6°F).

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Average pressure in September
Limestone, ME

Average pressure in September - Limestone, ME
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is September (30.02"Hg).
The months with the lowest atmospheric pressure are June and July (29.89"Hg).

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Average wind speed in September
Limestone, ME

Average wind speed in September - Limestone, ME
  • Average wind speed in September: 6.8mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in September
Limestone, ME

Average humidity in September - Limestone, ME
  • Average humidity in September: 81%

The months with the highest relative humidity are February and March (93%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in September
Limestone, ME

Average rainfall in September - Limestone, ME
  • Average rainfall in September: 1.69"

The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is February (1.46").

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Average rainfall days in September
Limestone, ME

Average rainfall days in September - Limestone, ME
  • Average rainfall days in September: 12.7 days

The months with the highest number of rainy days are May, June and August (16.8 days).
The month with the least rainy days is January (4 days).

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Average snowfall in September
Limestone, ME

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

The month with the highest snowfall is January (10.63").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Limestone, ME

Average snowfall days in September - Limestone, ME
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (21 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
Limestone, ME

Average daylight in September / Average sunshine in September - Limestone, ME
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in September: 7h and 1min

The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 6min).

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Average sunshine days in September
Limestone, ME

Average sunshine days in September - Limestone, ME
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is April (7.8 days).

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Average UV index in September
Limestone, ME

Average UV index in September - Limestone, ME
  • Average UV index in September: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).

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Average cloud cover in September
Limestone, ME

Average cloud cover in September - Limestone, ME
  • Average cloud cover in September: 46

The month with the most cloud cover is February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 44).

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Average visibility in September
Limestone, ME

Average visibility in September - Limestone, ME
  • Average visibility in September: 5mi

The month with the highest visibility is May (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).

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Limestone, Maine, USA

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