September weather forecast
Smyrna Mills, ME

Share

Weather in September

September, the first month of the autumn in Smyrna Mills, is still a refreshing month, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 47.1°F (8.4°C).

Temperature

Smyrna Mills's September weather features a light decline in high-temperatures, reducing from a moderately hot 74.5°F (23.6°C) in August to a comfortable 66.4°F (19.1°C). During September, the temperature in Smyrna Mills is averaged to a low of 47.1°F (8.4°C) at night.

Humidity

In September, the average relative humidity in Smyrna Mills is 80%.

Rainfall

In Smyrna Mills, in September, it is raining for 12.6 days, with typically 2.32" (59mm) of accumulated precipitation. In Smyrna Mills, during the entire year, the rain falls for 147.4 days and collects up to 31.81" (808mm) of precipitation.

Snowfall

In Smyrna Mills, snow does not fall in June through September.

Daylight

The average length of the day in September in Smyrna Mills is 12h and 32min.
On the first day of the month, sunrise is at 5:54 am and sunset at 7:10 pm. On the last day of September, in Smyrna Mills, sunrise is at 6:30 am and sunset at 6:14 pm EDT.

Sunshine

In Smyrna Mills, Maine, the average sunshine in September is 7.4h.

UV index

The average daily maximum UV index in September in Smyrna Mills is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 3 during September translates into the following directions:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun's radiation is especially intense around midday; try to stay in shade during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Smyrna Mills?

The average high-temperature, in September, in Smyrna Mills, is 66.4°F (19.1°C), while the average low-temperature is 47.1°F (8.4°C).

What is the average humidity in September in Smyrna Mills?

In September, the average relative humidity in Smyrna Mills, Maine, is 80%.

How many days does it rain in September in Smyrna Mills?

In Smyrna Mills, in September, it is raining for 12.6 days, with typically 2.32" (59mm) of accumulated precipitation.

When it does not snow in Smyrna Mills?

June through September are months without snowfall in Smyrna Mills.

Does it snow in Smyrna Mills in September?

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

What is the average length of the day in September in Smyrna Mills?

The average day length in September in Smyrna Mills, Maine, is 12h and 32min.

What time are sunrise and sunset in September in Smyrna Mills?

On the first day of September, sunrise is at 5:54 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 6:14 pm EDT.

How long on average sun shines in September in Smyrna Mills?

In September, the average sunshine duration in Smyrna Mills is 7.4h.

What is the UV index reading in September in Smyrna Mills?

In Smyrna Mills, Maine, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to 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
Smyrna Mills, ME

Average temperature in September - Smyrna Mills, ME
  • Average high temperature in September: 66.4°F

The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (21.9°F).

  • Average low temperature in September: 47.1°F

The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).

Average pressure in September
Smyrna Mills, ME

Average pressure in September - Smyrna Mills, ME
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in September
Smyrna Mills, ME

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

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in September
Smyrna Mills, ME

Average humidity in September - Smyrna Mills, ME
  • Average humidity in September: 80%

The months with the highest relative humidity are January, February and March (91%).
The month with the lowest relative humidity is May (76%).

Average rainfall in September
Smyrna Mills, ME

Average rainfall in September - Smyrna Mills, ME
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (2.17").

Average rainfall days in September
Smyrna Mills, ME

Average rainfall days in September - Smyrna Mills, ME
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in September
Smyrna Mills, ME

Average snowfall in September - Smyrna Mills, ME
  • Average snowfall in September: 0"

The months with the highest snowfall are January and February (13.07").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Smyrna Mills, ME

Average snowfall days in September - Smyrna Mills, ME
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Smyrna Mills, ME

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

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in September: 7h and 2min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).

Average sunshine days in September
Smyrna Mills, ME

Average sunshine days in September - Smyrna Mills, ME
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is April (8.7 days).

Average UV index in September
Smyrna Mills, ME

Average UV index in September - Smyrna Mills, 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).

Average cloud cover in September
Smyrna Mills, ME

Average cloud cover in September - Smyrna Mills, ME
  • Average cloud cover in September: 44

The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 42).

Average visibility in September
Smyrna Mills, ME

Average visibility in September - Smyrna Mills, ME
  • Average visibility in September: 5mi

The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).

Smyrna Mills, Maine, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location