September weather forecast
Ellsworth, ME

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Weather in September

September brings with it autumn's initial whispers, evident in the falling temperatures of Ellsworth. Holding onto the summer's last warmth, the average high temperature drops to 68.2°F (20.1°C). Autumn arrives subtly, noticeable in the shortened daylight hours and a gradual return of crisp evenings. Despite the reduced sun-basking hours, the clear, sunny days ensure pleasant weather. October continues to carry the baton of transition, with temperatures sliding down further and autumn's charm deepening.

Temperature

In Ellsworth, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's moderately hot 75.4°F (24.1°C) to a pleasant 68.2°F (20.1°C). During the month of September, Ellsworth's nighttime temperature lowers to an average of 51.6°F (10.9°C).

Humidity

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

Rainfall

In Ellsworth, in September, during 10.3 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 137 rainfall days, and 24.96" (634mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Ellsworth, the average length of the day in September is 12h and 31min.
On the first day of September, sunrise is at 5:57 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 6:15 pm EDT.

Sunshine

In September, the average sunshine is 8.1h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 4 during September leads to these advisories:
Guard yourself - Precautionary measures against sun damage are advocated. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

The average high-temperature and low-temperature during September are 68.2°F (20.1°C) and 51.6°F (10.9°C) respectively.

What is the average humidity in September?

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

How many days does it rain in September?

In Ellsworth, in September, it is raining for 10.3 days, with typically 1.54" (39mm) of accumulated precipitation.

When it does not snow in Ellsworth?

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

Does it snow in September?

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

How many hours of daylight does Ellsworth have in September?

The average day length in September is 12h and 31min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 5:57 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 6:15 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.1h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat 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
Ellsworth, ME

Average temperature in September - Ellsworth, ME
  • Average high temperature in September: 68.2°F

The warmest months (with the highest average high temperature) are July and August (75.4°F).
The month with the lowest average high temperature is January (28.9°F).

  • Average low temperature in September: 51.6°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

Average pressure in September
Ellsworth, ME

Average pressure in September - Ellsworth, 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
Ellsworth, ME

Average wind speed in September - Ellsworth, ME
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are January and March (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in September
Ellsworth, ME

Average humidity in September - Ellsworth, ME
  • Average humidity in September: 78%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September
Ellsworth, ME

Average rainfall in September - Ellsworth, ME
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is July (1.3").

Average rainfall days in September
Ellsworth, ME

Average rainfall days in September - Ellsworth, ME
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is April (15.3 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in September
Ellsworth, ME

Average snowfall in September - Ellsworth, 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
Ellsworth, ME

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

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Ellsworth, 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 54min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

Average sunshine days in September
Ellsworth, ME

Average sunshine days in September - Ellsworth, ME
  • Average sunshine days in September: 18.1 days

The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is April (11.9 days).

Average UV index in September
Ellsworth, ME

Average UV index in September - Ellsworth, 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).

Average cloud cover in September
Ellsworth, ME

Average cloud cover in September - Ellsworth, ME
  • Average cloud cover in September: 38

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 38).

Average visibility in September
Ellsworth, ME

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

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

Ellsworth, Maine, USA

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