September weather forecast
Saco, ME

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Weather in September

As September starts, Saco, Maine, commences its transition from summer to fall. The days start to cool down, with temperatures dropping, but not below the mild and comfortable range. It stands out from the other months due to its reduced rainfall of only 1.34" (34mm). The decrease in daylight hours is compensated by the magical transformation of the city's landscape into a palette of autumn reds, oranges, and golds. September symbolizes a gentle changing of the seasons, where summer slowly fades, and the rich hues of fall start becoming apparent.

Temperature

Saco's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's warm 74.1°F (23.4°C) to a pleasant 68°F (20°C). Nighttime temperatures in Saco hover around an average low of 54.7°F (12.6°C) in September.

Humidity

In September, the average relative humidity in Saco, Maine, is 79%.

Rainfall

September is the month with the least rainfall. Rain falls for 10.5 days and accumulates 1.34" (34mm) of precipitation.

Snowfall

June through September are months without snowfall in Saco.

Daylight

In Saco, Maine, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:06 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:38 am and sunset at 6:24 pm EDT.

Sunshine

The average sunshine in September is 8.3h.

UV index

In September, the average daily maximum UV index in Saco is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 4 suggests this advice:
Be vigilant - Preventing sunburn is recommended. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Saco?

The average high-temperature and low-temperature in Saco during September are 68°F (20°C) and 54.7°F (12.6°C) respectively.

What is the average humidity in September in Saco?

The average relative humidity in September in Saco, Maine, is 79%.

What is the driest month in Saco?

The month with the least rainfall in Saco, Maine, is September, when the rain falls for 10.5 days and typically collects 1.34" (34mm) of precipitation.

How many days does it rain in September in Saco?

In Saco, during September, the rain falls for 10.5 days and regularly aggregates up to 1.34" (34mm) of precipitation.

When it does not snow in Saco?

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

Does it snow in Saco in September?

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

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

In Saco, the average day length in September is 12h and 29min.

When are sunrise and sunset in September in Saco?

In September, on the first day of the month, sunrise is at 6:06 am and sunset at 7:16 pm. On the last day of the month, in Saco, sunrise is at 6:38 am and sunset at 6:24 pm EDT.

How many hours of sunshine does Saco have in September?

In Saco, Maine, the average sunshine duration in September is 8.3h.

What is the UV index reading in September in Saco?

In Saco, Maine, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Saco, ME

Average temperature in September - Saco, ME
  • Average high temperature in September: 68°F

The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in September: 54.7°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September
Saco, ME

Average pressure in September - Saco, ME
  • Average pressure in September: 30.05"Hg

The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Saco, ME

Average wind speed in September - Saco, ME
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity in September
Saco, ME

Average humidity in September - Saco, ME
  • Average humidity in September: 79%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (75%).

Average rainfall in September
Saco, ME

Average rainfall in September - Saco, ME
  • Average rainfall in September: 1.34"

The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.34").

Average rainfall days in September
Saco, ME

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

The month with the highest number of rainy days is April (14.3 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in September
Saco, ME

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

The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Saco, ME

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

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).

Average sunshine days in September
Saco, ME

Average sunshine days in September - Saco, ME
  • Average sunshine days in September: 18.3 days

The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is April (12.9 days).

Average UV index in September
Saco, ME

Average UV index in September - Saco, ME
  • Average UV index in September: 4

The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September
Saco, ME

Average cloud cover in September - Saco, ME
  • Average cloud cover in September: 34

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in September
Saco, ME

Average visibility in September - Saco, ME
  • Average visibility in September: 6mi

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

Saco, Maine, USA

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