September weather forecast
Gardiner, ME

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Weather in September

September marks a noticeable shift in Gardiner's weather as summer begins to give way to fall. Temperatures drop to a comfortable 68.9°F (20.5°C), hinting at the approaching autumn. A slight increase in rainfall signifies the changing season, adorning Gardiner with vibrant fall foliage. Despite reduced daylight hours to 12.5, the city's landscape radiates under clear and sunny skies. September's decreasing temperatures and receding daylight hours silently announce the nearing end of summer's warmth.

Temperature

The move into September indicates a slight reduction in the average high-temperature, down from August's warm 75.6°F (24.2°C) to a pleasant 68.9°F (20.5°C). Throughout September, Gardiner anticipates an average low-temperature of 50.9°F (10.5°C).

Humidity

In September, the average relative humidity is 80%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11 days and typically collects 1.57" (40mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 30min.
On the first day of September, sunrise is at 6:02 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:21 pm EDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Undertake protective steps - Preventing sun damage is advised. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Frequently asked questions

What is the average September temperature?

In Gardiner, in September, the average high-temperature is 68.9°F (20.5°C), and the average low-temperature is 50.9°F (10.5°C).

What is the average humidity in September?

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

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11 days and typically collects 1.57" (40mm) of precipitation.

How many days does it rain in September?

In September, in Gardiner, the rain falls for 11 days. Throughout September, 1.57" (40mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

In Gardiner, the average day length in September is 12h and 30min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:02 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:21 pm EDT.

How many hours of sunshine does Gardiner have in September?

In September, the average sunshine duration is 8.5h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 4. A UV Index estimate 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
Gardiner, ME

Average temperature in September - Gardiner, ME
  • Average high temperature in September: 68.9°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (27.1°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).

Average pressure in September
Gardiner, ME

Average pressure in September - Gardiner, ME
  • Average pressure in September: 30.04"Hg

The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Gardiner, ME

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

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in September
Gardiner, ME

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

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).

Average rainfall in September
Gardiner, ME

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

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in September
Gardiner, ME

Average rainfall days in September - Gardiner, ME
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (6.7 days).

Average snowfall in September
Gardiner, ME

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

The month with the highest snowfall is January (6.57").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Gardiner, ME

Average snowfall days in September - Gardiner, 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
Gardiner, ME

Average daylight in September / Average sunshine in September - Gardiner, 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 3min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Gardiner, ME

Average sunshine days in September - Gardiner, ME
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (11.5 days).

Average UV index in September
Gardiner, ME

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

The month with the highest UV index is July (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
Gardiner, ME

Average cloud cover in September - Gardiner, ME
  • Average cloud cover in September: 36

The months with the most cloud cover are February, March and April (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in September
Gardiner, ME

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

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

Gardiner, Maine, USA

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