September weather forecast and climate
Chevak, AK

Weather in September

The first month of the autumn, September, is also a frosty month in Chevak, Alaska, with average temperature fluctuating between 45.1°F (7.3°C) and 49.5°F (9.7°C).

Temperature

In Chevak, the average high-temperature is relatively the same as in August - a frosty 49.5°F (9.7°C). In September, the average low-temperature is 45.1°F (7.3°C).

Humidity

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

Rainfall

The month with the most rainfall is September when the rain falls for 20.1 days and typically aggregates up to 2.87" (73mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows in Chevak. Throughout September, in the average 0.5 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Chevak, Alaska, there are 86.8 snowfall days, and 19.57" (497mm) of snow is accumulated.

Daylight

The average length of the day in Chevak is 12.8h.

Sunshine

In September, the average sunshine in Chevak is 3.8h.

UV index

The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 2 in September transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in September in Chevak?

In September, in Chevak, Alaska, the average high-temperature is 49.5°F (9.7°C), and the average low-temperature is 45.1°F (7.3°C).

What is the average humidity in September in Chevak?

In September, the average relative humidity is 80%.

How much does it rain in Chevak in September?

In Chevak, Alaska, during September, the rain falls for 20.1 days and regularly aggregates up to 2.87" (73mm) of precipitation.

What is the wettest month in Chevak?

The month with the most rainfall in Chevak, Alaska, is September when the rain falls for 20.1 days and typically aggregates up to 2.87" (73mm) of precipitation.

When does it start snowing in Chevak?

September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.04" (1mm) of snow.

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

In September, the average length of the day is 12.8h.

How long on average sun shines in September in Chevak?

In Chevak, Alaska, the average sunshine in September is 3.8h.

How high is the UV index in September in Chevak?

In Chevak, Alaska, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.

Average temperature in September
Chevak, AK

Average temperature in September - Chevak, AK
  • Average high temperature in September: 49.5°F

The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is January (16.2°F).

  • Average low temperature in September: 45.1°F

The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

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Average pressure in September
Chevak, AK

Average pressure in September - Chevak, AK
  • Average pressure in September: 29.74"

Months with the highest atmospheric pressure are May and July (29.91").
The month with the lowest atmospheric pressure is December (29.63").

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Average wind speed in September
Chevak, AK

Average wind speed in September - Chevak, AK
  • Average wind speed in September: 15.8mph

The windiest months (with the highest average wind speed) are October and November (18mph).
The calmest month (with the lowest average wind speed) is May (11.7mph).

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Average humidity in September
Chevak, AK

Average humidity in September - Chevak, AK
  • Average humidity in September: 80%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (78%).

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Average rainfall in September
Chevak, AK

Average rainfall in September - Chevak, AK
  • Average rainfall in September: 2.87"

The wettest month (with the highest rainfall) is September (2.87").
The driest month (with the least rainfall) is April (0.94").

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Average rainfall days in September
Chevak, AK

Average rainfall days in September - Chevak, AK
  • Average rainfall days in September: 20.1 days

The month with the highest number of rainy days is September (20.1 days).
The month with the least rainy days is March (3.7 days).

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Average snowfall in September
Chevak, AK

Average snowfall in September - Chevak, AK
  • Average snowfall in September: 0.04"

Months with the highest snowfall are February and December (3.98").
Months with the least snowfall are July and August (0").

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Average snowfall days in September
Chevak, AK

Average snowfall days in September - Chevak, AK
  • Average snowfall days in September: 0.5 days

The month with the highest number of snowfall days is December (15 days).
Months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
Chevak, AK

Average daylight in September / Average sunshine in September - Chevak, AK
  • Average daylight in September: 12.8h

The month with the longest days is June (Average daylight: 19.4h).
The month with the shortest days is December (Average daylight: 5.5h).

  • Average sunshine in September: 3.8h

The month with the most sunshine is May (Average sunshine: 7.4h).
The month with the least sunshine is December (Average sunshine: 2.1h).

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Average sunshine days in September
Chevak, AK

Average sunshine days in September - Chevak, AK
  • Average sunshine days in September: 6.5 days

The month with the most sunshine days is May (16.1 days).
The month with the least sunshine days is September (6.5 days).

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Average UV index in September
Chevak, AK

Average UV index in September - Chevak, AK
  • Average UV index in September: 2

Months with the highest UV index are June, July and August (UV index 3).
Months with the lowest UV index are January, February, March, November and December (UV index 1).

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Average cloud cover in September
Chevak, AK

Average cloud cover in September - Chevak, AK
  • Average cloud cover in September: 73

The month with the most cloud cover is September (Cloud cover 73).
Months with the least cloud cover are May and June (Cloud cover 58).

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Average visibility in September
Chevak, AK

Average visibility in September - Chevak, AK
  • Average visibility in September: 6mi

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

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