September weather forecast
Kasilof, AK

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Weather in September

The first month of the autumn, September, is still a cool month in Kasilof, Alaska, with an average temperature fluctuating between 43.9°F (6.6°C) and 53.4°F (11.9°C).

Temperature

The arrival of September suggests a slight decrease in the average high-temperature, moving from an enjoyable 61°F (16.1°C) in August to a fresh 53.4°F (11.9°C). In the month of September, Kasilof witnesses a consistent average low-temperature of 43.9°F (6.6°C).

Humidity

In Kasilof, the average relative humidity in September is 81%.

Rainfall

The month with the most rainfall in Kasilof is September, when the rain falls for 18.7 days and typically aggregates up to 3.03" (77mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.28" (7mm) of snow. In Kasilof, during the entire year, snow falls for 72.3 days and aggregates up to 34.65" (880mm) of snow.

Daylight

In September, the average length of the day is 12h and 50min.
On the first day of the month, sunrise is at 7:01 am and sunset at 9:07 pm. On the last day of September, in Kasilof, sunrise is at 8:10 am and sunset at 7:38 pm AKDT.

Sunshine

In Kasilof, the average sunshine in September is 6.4h.

UV index

In Kasilof, Alaska, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 2 during September leads to these advisories:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. During bright days, sunglasses that offer UVA and UVB defense are recommended. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

What is the temperature in September in Kasilof?

The average high-temperature, in September, in Kasilof, is 53.4°F (11.9°C), while the average low-temperature is 43.9°F (6.6°C).

What is the average humidity in September in Kasilof?

In Kasilof, Alaska, the average relative humidity in September is 81%.

What is the wettest month in Kasilof?

The month with the most rainfall in Kasilof is September, when the rain falls for 18.7 days and typically aggregates up to 3.03" (77mm) of precipitation.

How many days does it rain in September in Kasilof?

In September, the rain falls for 18.7 days. Throughout September, 3.03" (77mm) of precipitation is accumulated.

When does it start to snow in Kasilof?

September is the first month it typically snows in Kasilof. Throughout September, in the average 0.3 snowfall days, it receives 0.28" (7mm) of snow.

How many hours of daylight does Kasilof have in September?

In Kasilof, the average day length in September is 12h and 50min.

What time are sunrise and sunset in September in Kasilof?

On the first day of September in Kasilof, Alaska, sunrise is at 7:01 am and sunset at 9:07 pm. On the last day of the month, sunrise is at 8:10 am and sunset at 7:38 pm AKDT.

How long on average sun shines in September in Kasilof?

In Kasilof, the average sunshine duration in September is 6.4h.

What is the UV index intensity in September in Kasilof?

In Kasilof, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
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
Kasilof, AK

Average temperature in September - Kasilof, AK
  • Average high temperature in September: 53.4°F

The warmest month (with the highest average high temperature) is July (63°F).
The month with the lowest average high temperature is January (23.2°F).

  • Average low temperature in September: 43.9°F

The month with the highest average low temperature is July (50.5°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in September
Kasilof, AK

Average pressure in September - Kasilof, AK
  • Average pressure in September: 29.73"Hg

The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is December (29.63"Hg).

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Average wind speed in September
Kasilof, AK

Average wind speed in September - Kasilof, AK
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is December (7.7mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

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Average humidity in September
Kasilof, AK

Average humidity in September - Kasilof, AK
  • Average humidity in September: 81%

The months with the highest relative humidity are January, February and March (89%).
The month with the lowest relative humidity is May (68%).

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Average rainfall in September
Kasilof, AK

Average rainfall in September - Kasilof, AK
  • Average rainfall in September: 3.03"

The wettest month (with the highest rainfall) is September (3.03").
The driest months (with the least rainfall) are March, May and June (1.1").

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Average rainfall days in September
Kasilof, AK

Average rainfall days in September - Kasilof, AK
  • Average rainfall days in September: 18.7 days

The month with the highest number of rainy days is September (18.7 days).
The month with the least rainy days is February (6.5 days).

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Average snowfall in September
Kasilof, AK

Average snowfall in September - Kasilof, AK
  • Average snowfall in September: 0.28"

The month with the highest snowfall is December (8.31").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Kasilof, AK

Average snowfall days in September - Kasilof, AK
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is December (13.9 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).

  • Average sunshine in September: 6h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).

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Average sunshine days in September
Kasilof, AK

Average sunshine days in September - Kasilof, AK
  • Average sunshine days in September: 10 days

The month with the most sunshine days is July (14.3 days).
The month with the least sunshine days is September (10 days).

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Average UV index in September
Kasilof, AK

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

The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are February, March and December (UV index 1).

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Average cloud cover in September
Kasilof, AK

Average cloud cover in September - Kasilof, AK
  • Average cloud cover in September: 50

The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 45).

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Average visibility in September
Kasilof, AK

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

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

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Kasilof, Alaska, USA

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