September weather forecast
Excursion Inlet, AK

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Weather in September

September, the first month of the autumn in Excursion Inlet, is still a cool month, with an average temperature ranging between max 51.1°F (10.6°C) and min 45°F (7.2°C).

Temperature

With the arrival of September, Excursion Inlet experiences a modest decline in average high-temperatures, transitioning from a mild 56.5°F (13.6°C) in August to a cool 51.1°F (10.6°C). The nighttime temperature in Excursion Inlet in September experiences a minor dip, averaging a chilly 45°F (7.2°C).

Humidity

In Excursion Inlet, the average relative humidity in September is 88%.

Rainfall

In September, the rain falls for 18.3 days. Throughout September, 3.62" (92mm) of precipitation is accumulated. In Excursion Inlet, during the entire year, the rain falls for 182.7 days and collects up to 37.4" (950mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day in Excursion Inlet is 12h and 47min.
On the first day of the month, sunrise is at 6:02 am and sunset at 8:00 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:36 pm AKDT.

Sunshine

In September, the average sunshine is 5.4h.

UV index

The average daily maximum UV index in September in Excursion Inlet is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 2 suggests these recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

What is the average September temperature in Excursion Inlet?

The average high-temperature and low-temperature in Excursion Inlet during September are 51.1°F (10.6°C) and 45°F (7.2°C) respectively.

What is the average humidity in September in Excursion Inlet?

In Excursion Inlet, the average relative humidity in September is 88%.

How many days does it rain in September in Excursion Inlet?

In Excursion Inlet, Alaska, during September, the rain falls for 18.3 days and regularly aggregates up to 3.62" (92mm) of precipitation.

When it does not snow in Excursion Inlet?

In Excursion Inlet, Alaska, snow does not fall in May through September.

Does it snow in Excursion Inlet in September?

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

How many hours of daylight does Excursion Inlet have in September?

The average day length in September in Excursion Inlet, Alaska, is 12h and 47min.

When is the sunrise / sunset in September in Excursion Inlet?

On the first day of September in Excursion Inlet, sunrise is at 6:02 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:36 pm AKDT.

How long on average sun shines in September in Excursion Inlet?

In Excursion Inlet, Alaska, the average sunshine duration in September is 5.4h.

How high is the UV index in September in Excursion Inlet?

The average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a minimal health 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
Excursion Inlet, AK

Average temperature in September - Excursion Inlet, AK
  • Average high temperature in September: 51.1°F

The warmest month (with the highest average high temperature) is July (57.2°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in September: 45°F

The month with the highest average low temperature is July (49.5°F).
The coldest month (with the lowest average low temperature) is February (25.9°F).

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Average pressure in September
Excursion Inlet, AK

Average pressure in September - Excursion Inlet, AK
  • Average pressure in September: 29.88"Hg

The month with the highest atmospheric pressure is July (30.03"Hg).
The month with the lowest atmospheric pressure is November (29.77"Hg).

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Average wind speed in September
Excursion Inlet, AK

Average wind speed in September - Excursion Inlet, AK
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is January (7mph).
The calmest months (with the lowest average wind speed) are June and July (3.7mph).

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Average humidity in September
Excursion Inlet, AK

Average humidity in September - Excursion Inlet, AK
  • Average humidity in September: 88%

The month with the highest relative humidity is August (90%).
The month with the lowest relative humidity is November (84%).

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Average rainfall in September
Excursion Inlet, AK

Average rainfall in September - Excursion Inlet, AK
  • Average rainfall in September: 3.62"

The wettest months (with the highest rainfall) are October and November (4.21").
The driest month (with the least rainfall) is May (1.61").

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Average rainfall days in September
Excursion Inlet, AK

Average rainfall days in September - Excursion Inlet, AK
  • Average rainfall days in September: 18.3 days

The month with the highest number of rainy days is June (18.9 days).
The month with the least rainy days is February (8.2 days).

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Average snowfall in September
Excursion Inlet, AK

Average snowfall in September - Excursion Inlet, AK
  • Average snowfall in September: 0"

The month with the highest snowfall is January (11.22").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Excursion Inlet, AK

Average snowfall days in September - Excursion Inlet, AK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is March (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Excursion Inlet, AK

Average daylight in September / Average sunshine in September - Excursion Inlet, AK
  • Average daylight in September: 12h and 5min

The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).

  • Average sunshine in September: 5h and 2min

The month with the most sunshine is June (Average sunshine: 7h and 42min).
The months with the least sunshine are January and December (Average sunshine: 2h and 54min).

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Average sunshine days in September
Excursion Inlet, AK

Average sunshine days in September - Excursion Inlet, AK
  • Average sunshine days in September: 10.2 days

The months with the most sunshine days are February and May (12.5 days).
The month with the least sunshine days is June (7.7 days).

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Average UV index in September
Excursion Inlet, AK

Average UV index in September - Excursion Inlet, AK
  • Average UV index in September: 2

The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are November and December (UV index 1).

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Average cloud cover in September
Excursion Inlet, AK

Average cloud cover in September - Excursion Inlet, AK
  • Average cloud cover in September: 63

The month with the most cloud cover is November (Cloud cover 71).
The month with the least cloud cover is May (Cloud cover 56).

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Average visibility in September
Excursion Inlet, AK

Average visibility in September - Excursion Inlet, AK
  • Average visibility in September: 5mi

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

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Excursion Inlet, Alaska, USA

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