September weather forecast
Kiwalik, AK

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Weather in September

September, the first month of the autumn in Kiwalik, is still a chilly month, with an average temperature fluctuating between 46.9°F (8.3°C) and 39.4°F (4.1°C).

Temperature

September ushers in a slight temperature change, with average high-temperatures reducing from August's moderate 56.1°F (13.4°C) to a frosty 46.9°F (8.3°C). A slight dip in temperature to an icy 39.4°F (4.1°C) marks the average nights in Kiwalik during September.

Humidity

In September, the average relative humidity in Kiwalik is 77%.

Rainfall

In Kiwalik, in September, it is raining for 10 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, in Kiwalik, there are 74.6 rainfall days, and 6.69" (170mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. September is the first month it typically snows in Kiwalik. Throughout September, in the average 2.7 snowfall days, it receives 0.51" (13mm) of snow. In Kiwalik, during the entire year, snow falls for 85.7 days and aggregates up to 15.79" (401mm) of snow.

Daylight

The average length of the day in September is 13h and 3min.
On the first day of September, sunrise is at 7:26 am and sunset at 10:08 pm. On the last day of the month, sunrise is at 8:58 am and sunset at 8:15 pm AKDT.

Sunshine

In Kiwalik, the average sunshine in September is 6.2h.

UV index

In September, the average daily maximum UV index in Kiwalik, Alaska, is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 2 during September translates into the following directions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Around midday, solar radiation is most harmful; hence, exposure should be limited. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What are the temperatures in Kiwalik in September?

In September, the average high-temperature and low-temperature in Kiwalik are 46.9°F (8.3°C) and 39.4°F (4.1°C) respectively.

What is the average humidity in September in Kiwalik?

The average relative humidity in September is 77%.

How much does it rain in Kiwalik in September?

In Kiwalik, during September, the rain falls for 10 days and regularly aggregates up to 0.67" (17mm) of precipitation.

When does it start snowing in Kiwalik?

September is the first month it typically snows. Throughout September, in the average 2.7 snowfall days, it receives 0.51" (13mm) of snow.

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

The average day length in September in Kiwalik is 13h and 3min.

When are sunrise and sunset in September in Kiwalik?

In September, on the first day of the month, sunrise is at 7:26 am and sunset at 10:08 pm. On the last day of the month, in Kiwalik, sunrise is at 8:58 am and sunset at 8:15 pm AKDT.

How many hours of sunshine does Kiwalik have in September?

In September, the average sunshine duration in Kiwalik is 6.2h.

What is the UV index reading in September in Kiwalik?

In Kiwalik, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Kiwalik, AK

Average temperature in September - Kiwalik, AK
  • Average high temperature in September: 46.9°F

The warmest month (with the highest average high temperature) is July (59.2°F).
The month with the lowest average high temperature is January (6.8°F).

  • Average low temperature in September: 39.4°F

The month with the highest average low temperature is July (47.7°F).
The coldest month (with the lowest average low temperature) is January (-1.7°F).

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Average pressure in September
Kiwalik, AK

Average pressure in September - Kiwalik, AK
  • Average pressure in September: 29.76"Hg

The month with the highest atmospheric pressure is May (29.95"Hg).
The month with the lowest atmospheric pressure is October (29.75"Hg).

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Average wind speed in September
Kiwalik, AK

Average wind speed in September - Kiwalik, AK
  • Average wind speed in September: 10.4mph

The windiest month (with the highest average wind speed) is October (11.1mph).
The calmest month (with the lowest average wind speed) is May (8.1mph).

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Average humidity in September
Kiwalik, AK

Average humidity in September - Kiwalik, AK
  • Average humidity in September: 77%

The months with the highest relative humidity are January and March (92%).
The month with the lowest relative humidity is June (69%).

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Average rainfall in September
Kiwalik, AK

Average rainfall in September - Kiwalik, AK
  • Average rainfall in September: 0.67"

The wettest month (with the highest rainfall) is July (1.1").
The driest months (with the least rainfall) are January, May and June (0.31").

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Average rainfall days in September
Kiwalik, AK

Average rainfall days in September - Kiwalik, AK
  • Average rainfall days in September: 10 days

The month with the highest number of rainy days is August (13.8 days).
The month with the least rainy days is December (1.5 days).

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Average snowfall in September
Kiwalik, AK

Average snowfall in September - Kiwalik, AK
  • Average snowfall in September: 0.51"

The months with the highest snowfall are February and March (3.03").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Kiwalik, AK

Average snowfall days in September - Kiwalik, AK
  • Average snowfall days in September: 2.7 days

The month with the highest number of snowfall days is March (14.5 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in September / Average sunshine in September - Kiwalik, AK
  • Average daylight in September: 13h and 1min

The month with the longest days is July (Average daylight: 20h and 54min).
The month with the shortest days is December (Average daylight: 3h and 6min).

  • Average sunshine in September: 6h and 1min

The month with the most sunshine is August (Average sunshine: 7h and 36min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).

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Average sunshine days in September
Kiwalik, AK

Average sunshine days in September - Kiwalik, AK
  • Average sunshine days in September: 16.7 days

The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is February (12.9 days).

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Average UV index in September
Kiwalik, AK

Average UV index in September - Kiwalik, 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 March, April, November and December (UV index 1).

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Average cloud cover in September
Kiwalik, AK

Average cloud cover in September - Kiwalik, AK
  • Average cloud cover in September: 53

The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is June (Cloud cover 42).

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Average visibility in September
Kiwalik, AK

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

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

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Kiwalik, Alaska, USA

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