September weather forecast
Wasilla, AK

The famed Chugach Mountain Ranges in Wasilla, Alaska
The famed Chugach Mountain Ranges in Wasilla, Alaska

Weather in September

September, the first month of the autumn in Wasilla, is also a fresh month, with an average temperature ranging between max 52°F (11.1°C) and min 39.4°F (4.1°C).

Temperature

In Wasilla, the average high-temperature in September slightly decreases from a mild 60.4°F (15.8°C) in August to a fresh 52°F (11.1°C). In September, in Wasilla, Alaska, the average low-temperature is 39.4°F (4.1°C).

Humidity

The average relative humidity in September in Wasilla, Alaska, is 76%.

Rainfall

In Wasilla, during September, the rain falls for 12 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Wasilla, during the entire year, the rain falls for 124.6 days and collects up to 7.36" (187mm) of precipitation.

Snowfall

In Wasilla, snow does not fall in June through September.

Daylight

The average length of the day in September in Wasilla is 12h and 52min.
On the first day of September, sunrise is at 6:49 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 7:32 pm AKDT.

Sunshine

The average sunshine in September is 8h.

UV index

The average daily maximum UV index in September in Wasilla is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in September interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Wasilla?

In Wasilla, Alaska, in September, the average high-temperature is 52°F (11.1°C), and the average low-temperature is 39.4°F (4.1°C).

What is the average humidity in September in Wasilla?

In Wasilla, Alaska, the average relative humidity in September is 76%.

How many days does it rain in September in Wasilla?

In September, the rain falls for 12 days. Throughout September, 0.75" (19mm) of precipitation is accumulated.

When it does not snow in Wasilla?

June through September are months without snowfall in Wasilla.

Does it snow in Wasilla in September?

In Wasilla, Alaska, in September, it doesn't snow. In October, it regularly snows.

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

In September, the average day length is 12h and 52min.

When is the sunrise / sunset in September in Wasilla?

On the first day of September in Wasilla, Alaska, sunrise is at 6:49 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 7:32 pm AKDT.

How many hours of sunshine does Wasilla have in September?

In September, the average sunshine duration is 8h.

What is the UV index reading in September in Wasilla?

In September, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Wasilla, AK

Average temperature in September - Wasilla, AK
  • Average high temperature in September: 52°F

The warmest month (with the highest average high temperature) is July (63.3°F).
The month with the lowest average high temperature is January (18.3°F).

  • Average low temperature in September: 39.4°F

The month with the highest average low temperature is July (47.1°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).

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Average pressure in September
Wasilla, AK

Average pressure in September - Wasilla, AK
  • Average pressure in September: 29.75"Hg

The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is December (29.69"Hg).

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Average wind speed in September
Wasilla, AK

Average wind speed in September - Wasilla, AK
  • Average wind speed in September: 4.2mph

The windiest months (with the highest average wind speed) are January, November and December (4.8mph).
The calmest month (with the lowest average wind speed) is July (4mph).

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Average humidity in September
Wasilla, AK

Average humidity in September - Wasilla, AK
  • Average humidity in September: 76%

The month with the highest relative humidity is March (87%).
The month with the lowest relative humidity is May (65%).

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Average rainfall in September
Wasilla, AK

Average rainfall in September - Wasilla, AK
  • Average rainfall in September: 0.75"

The wettest month (with the highest rainfall) is August (0.94").
The driest month (with the least rainfall) is January (0.31").

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Average rainfall days in September
Wasilla, AK

Average rainfall days in September - Wasilla, AK
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is June (14 days).
The month with the least rainy days is February (6.8 days).

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Average snowfall in September
Wasilla, AK

Average snowfall in September - Wasilla, AK
  • Average snowfall in September: 0"

The month with the highest snowfall is December (2.64").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Wasilla, AK

Average snowfall days in September - Wasilla, AK
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (9.8 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
Wasilla, AK

Average daylight in September / Average sunshine in September - Wasilla, AK
  • Average daylight in September: 12h and 52min

The month with the longest days is June (Average daylight: 19h and 22min).
The month with the shortest days is December (Average daylight: 5h and 30min).

  • Average sunshine in September: 8h

The month with the most sunshine is May (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 4h).

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Average sunshine days in September
Wasilla, AK

Average sunshine days in September - Wasilla, AK
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is June (9.3 days).

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Average UV index in September
Wasilla, AK

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

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

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Average cloud cover in September
Wasilla, AK

Average cloud cover in September - Wasilla, AK
  • Average cloud cover in September: 41

The months with the most cloud cover are April and August (Cloud cover 44).
The months with the least cloud cover are January and May (Cloud cover 37).

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Average visibility in September
Wasilla, AK

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

The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is March (4mi).

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