September weather forecast
Frankfort, ME

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Weather in September

The first month of the autumn, September, is also an agreeable month in Frankfort, Maine, with an average temperature fluctuating between 50.7°F (10.4°C) and 68.7°F (20.4°C).

Temperature

Frankfort's transition into September involves a gentle shift in temperature, receding from a warm 75.6°F (24.2°C) in August to an agreeable 68.7°F (20.4°C). Frankfort records an average nighttime low of 50.7°F (10.4°C) in September.

Humidity

The average relative humidity in September is 80%.

Rainfall

In Frankfort, in September, during 10.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Frankfort, Maine, during the entire year, the rain falls for 144.3 days and collects up to 24.61" (625mm) of precipitation.

Snowfall

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

Daylight

In Frankfort, the average length of the day in September is 12h and 31min.
On the first day of September, sunrise is at 5:58 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 6:17 pm EDT.

Sunshine

In September, the average sunshine in Frankfort is 8.1h.

UV index

In Frankfort, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 in September transforms into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

During September, Frankfort experiences an average high-temperature of 68.7°F (20.4°C) and a low-temperature of 50.7°F (10.4°C).

What is the average humidity in September?

The average relative humidity in September is 80%.

How many days does it rain in September?

In Frankfort, in September, it is raining for 10.5 days, with typically 1.57" (40mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

How many hours of daylight does Frankfort have in September?

In September, the average day length is 12h and 31min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 5:58 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 6:17 pm EDT.

How many hours of sunshine does Frankfort have in September?

In September, the average sunshine duration is 8.1h.

How high is the UV index in September?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Frankfort, ME

Average temperature in September - Frankfort, ME
  • Average high temperature in September: 68.7°F

The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in September: 50.7°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average pressure in September
Frankfort, ME

Average pressure in September - Frankfort, 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
Frankfort, ME

Average wind speed in September - Frankfort, ME
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in September
Frankfort, ME

Average humidity in September - Frankfort, ME
  • Average humidity in September: 80%

The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and November (77%).

Average rainfall in September
Frankfort, ME

Average rainfall in September - Frankfort, ME
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is July (1.42").

Average rainfall days in September
Frankfort, ME

Average rainfall days in September - Frankfort, ME
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (7.6 days).

Average snowfall in September
Frankfort, ME

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

The month with the highest snowfall is January (4.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Frankfort, ME

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

The month with the highest number of snowfall days is February (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Frankfort, 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: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

Average sunshine days in September
Frankfort, ME

Average sunshine days in September - Frankfort, 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 (11.6 days).

Average UV index in September
Frankfort, ME

Average UV index in September - Frankfort, 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, October, November and December (UV index 2).

Average cloud cover in September
Frankfort, ME

Average cloud cover in September - Frankfort, ME
  • Average cloud cover in September: 39

The months with the most cloud cover are February, March and April (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 39).

Average visibility in September
Frankfort, ME

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

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

Frankfort, Maine, USA

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