September weather forecast
Coffman Cove, AK

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Fishing boats, forest, and mountain ranges in the Coffman Cove, Alaska
Fishing boats, forest, and mountain ranges in the Coffman Cove, Alaska

Weather in September

September, the first month of the autumn in Coffman Cove, is also a moderate month, with temperature in the range of an average high of 56.5°F (13.6°C) and an average low of 46.9°F (8.3°C).

Temperature

September's advent presents an average high-temperature of a still moderate 56.5°F (13.6°C), indicating a slight variation from the conditions of the previous month. Throughout September, Coffman Cove anticipates an average low-temperature of 46.9°F (8.3°C).

Humidity

In September, the average relative humidity in Coffman Cove is 88%.

Rainfall

In Coffman Cove, Alaska, in September, it is raining for 19.4 days, with typically 6.02" (153mm) of accumulated precipitation. Throughout the year, there are 231.7 rainfall days, and 67.83" (1723mm) of precipitation is accumulated.

Snowfall

In Coffman Cove, snow does not fall in May through October.

Daylight

The average length of the day in September is 12h and 43min.
On the first day of September, sunrise is at 5:57 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:27 pm AKDT.

Sunshine

The months with the most sunshine in Coffman Cove are May and September, with an average of 5.7h of sunshine.

UV index

The average daily maximum UV index in September in Coffman Cove, Alaska, is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 3 during September leads to these advisories:
Make use of precautions - Suggestions to resist sunburn are communicated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the temperature in September in Coffman Cove?

During September, Coffman Cove experiences an average high-temperature of 56.5°F (13.6°C) and a low-temperature of 46.9°F (8.3°C).

What is the average humidity in September in Coffman Cove?

The average relative humidity in September is 88%.

How many days does it rain in September in Coffman Cove?

In Coffman Cove, Alaska, in September, it is raining for 19.4 days, with typically 6.02" (153mm) of accumulated precipitation.

When it does not snow in Coffman Cove?

In Coffman Cove, snow does not fall in May through October.

What is the average length of the day in September in Coffman Cove?

In Coffman Cove, the average day length in September is 12h and 43min.

When is the sunrise / sunset in September in Coffman Cove?

In September, on the first day of the month, sunrise is at 5:57 am and sunset at 7:44 pm. On the last day of the month, in Coffman Cove, Alaska, sunrise is at 6:54 am and sunset at 6:27 pm AKDT.

What are the months with the most sunshine in Coffman Cove?

May and September, with an average of 5.7h of sunshine, are months with the most sunshine.

How long on average sun shines in September in Coffman Cove?

In September, the average sunshine duration is 5.7h.

What is the UV index reading in September in Coffman Cove?

The average daily maximum UV index in September in Coffman Cove, Alaska, is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from 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
Coffman Cove, AK

Average temperature in September - Coffman Cove, AK
  • Average high temperature in September: 56.5°F

The warmest months (with the highest average high temperature) are July and August (60.4°F).
The month with the lowest average high temperature is December (36.5°F).

  • Average low temperature in September: 46.9°F

The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is February (30.2°F).

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Average pressure in September
Coffman Cove, AK

Average pressure in September - Coffman Cove, AK
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is July (30.06"Hg).
The month with the lowest atmospheric pressure is November (29.77"Hg).

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Average wind speed in September
Coffman Cove, AK

Average wind speed in September - Coffman Cove, AK
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

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Average humidity in September
Coffman Cove, AK

Average humidity in September - Coffman Cove, AK
  • Average humidity in September: 88%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are March and May (84%).

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Average rainfall in September
Coffman Cove, AK

Average rainfall in September - Coffman Cove, AK
  • Average rainfall in September: 6.02"

The wettest month (with the highest rainfall) is November (8.03").
The driest month (with the least rainfall) is May (2.83").

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Average rainfall days in September
Coffman Cove, AK

Average rainfall days in September - Coffman Cove, AK
  • Average rainfall days in September: 19.4 days

The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is February (14.8 days).

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Average snowfall in September
Coffman Cove, AK

Average snowfall in September - Coffman Cove, AK
  • Average snowfall in September: 0"

The month with the highest snowfall is March (10.35").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Coffman Cove, AK

Average snowfall days in September - Coffman Cove, AK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is March (10.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Coffman Cove, AK

Average daylight in September / Average sunshine in September - Coffman Cove, AK
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).

  • Average sunshine in September: 5h and 4min

The months with the most sunshine are May and September (Average sunshine: 5h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

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Average sunshine days in September
Coffman Cove, AK

Average sunshine days in September - Coffman Cove, AK
  • Average sunshine days in September: 9.8 days

The month with the most sunshine days is July (11.1 days).
The month with the least sunshine days is November (5.3 days).

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Average UV index in September
Coffman Cove, AK

Average UV index in September - Coffman Cove, AK
  • Average UV index in September: 3

The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in September
Coffman Cove, AK

Average cloud cover in September - Coffman Cove, AK
  • Average cloud cover in September: 62

The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is September (Cloud cover 62).

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Average visibility in September
Coffman Cove, AK

Average visibility in September - Coffman Cove, 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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Coffman Cove, Alaska, USA

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