September weather forecast and climate
Prudhoe Bay, AK

Weather in September

September, the first month of the autumn, in Prudhoe Bay, is still a cold month, with temperature in the range of an average low of 33.1°F (0.6°C) and an average high of 39.2°F (4°C).

Temperature

In Prudhoe Bay, Alaska, the average high-temperature slightly decreases, from a frosty 46.9°F (8.3°C) in August, to a wintry 39.2°F (4°C). The average low-temperature, in September, is 33.1°F (0.6°C).

Humidity

In Prudhoe Bay, the average relative humidity is 84%.

Rainfall

In September, the rain falls for 7 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. In Prudhoe Bay, Alaska, during the entire year, the rain falls for 52.1 days and collects up to 3.62" (92mm) of precipitation.

Snowfall

Months with snowfall are January through June, August through December. In Prudhoe Bay, during September, snow falls for 8.5 days and regularly aggregates up to 0.87" (22mm) of snow. Throughout the year, in Prudhoe Bay, there are 122.8 snowfall days, and 10.24" (260mm) of snow is accumulated.

Daylight

The average length of the day is 13.3h.

Sunshine

In Prudhoe Bay, the average sunshine is 4.3h.

UV index

February through April, August through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 1 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Prudhoe Bay?

The average high-temperature, in September, in Prudhoe Bay, is 39.2°F (4°C), while the average low-temperature is 33.1°F (0.6°C).

What is the average humidity in September in Prudhoe Bay?

In September, the average relative humidity in Prudhoe Bay, Alaska, is 84%.

How many days does it rain in September in Prudhoe Bay?

In Prudhoe Bay, Alaska, during September, the rain falls for 7 days and regularly aggregates up to 0.31" (8mm) of precipitation.

How much does it snow in Prudhoe Bay in September?

In Prudhoe Bay, Alaska, during September, snow falls for 8.5 days and regularly aggregates up to 0.87" (22mm) of snow.

What is the average length of the day in September in Prudhoe Bay?

In Prudhoe Bay, Alaska, the average length of the day in September is 13.3h.

How long on average sun shines in September in Prudhoe Bay?

In Prudhoe Bay, Alaska, the average sunshine in September is 4.3h.

When is the lowest UV index in Prudhoe Bay?

Months with the lowest UV index in Prudhoe Bay, Alaska, are February through April, August through December, with an average maximum UV index of 1.

How high is the UV index in September in Prudhoe Bay?

The average daily maximum UV index in September in Prudhoe Bay is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Prudhoe Bay, AK

Average temperature in September - Prudhoe Bay, AK
  • Average high temperature in September: 39.2°F

The warmest month (with the highest average high temperature) is July (51.4°F).
The month with the lowest average high temperature is January (-7.1°F).

  • Average low temperature in September: 33.1°F

The month with the highest average low temperature is July (40.6°F).
The coldest month (with the lowest average low temperature) is January (-16.6°F).

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Average pressure in September
Prudhoe Bay, AK

Average pressure in September - Prudhoe Bay, AK
  • Average pressure in September: 29.84"

The month with the highest atmospheric pressure is March (30.07").
The month with the lowest atmospheric pressure is September (29.84").

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Average wind speed in September
Prudhoe Bay, AK

Average wind speed in September - Prudhoe Bay, AK
  • Average wind speed in September: 11.2mph

The windiest month (with the highest average wind speed) is October (11.9mph).
The calmest month (with the lowest average wind speed) is May (9.8mph).

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Average humidity in September
Prudhoe Bay, AK

Average humidity in September - Prudhoe Bay, AK
  • Average humidity in September: 84%

Months with the highest relative humidity are January, February, March and December (93%).
The month with the lowest relative humidity is July (76%).

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Average rainfall in September
Prudhoe Bay, AK

Average rainfall in September - Prudhoe Bay, AK
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is August (0.83").
The driest months (with the least rainfall) are January, April and December (0.16").

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Average rainfall days in September
Prudhoe Bay, AK

Average rainfall days in September - Prudhoe Bay, AK
  • Average rainfall days in September: 7 days

The month with the highest number of rainy days is August (11.8 days).
The month with the least rainy days is February (0.7 days).

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Average snowfall in September
Prudhoe Bay, AK

Average snowfall in September - Prudhoe Bay, AK
  • Average snowfall in September: 0.87"

The month with the highest snowfall is November (1.81").
The month with the least snowfall is July (0").

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Average snowfall days in September
Prudhoe Bay, AK

Average snowfall days in September - Prudhoe Bay, AK
  • Average snowfall days in September: 8.5 days

The month with the highest number of snowfall days is November (17.5 days).
The month with the least snowfall days is July (0.2 days).

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Average daylight in September /
Average sunshine in September
Prudhoe Bay, AK

Average daylight in September / Average sunshine in September - Prudhoe Bay, AK
  • Average daylight in September: 13.3h

The month with the longest days is June (Average daylight: 24h).
The month with the shortest days is December (Average daylight: 0h).

  • Average sunshine in September: 4.3h

The month with the most sunshine is August (Average sunshine: 6.6h).
The month with the least sunshine is December (Average sunshine: 0.4h).

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Average sunshine days in September
Prudhoe Bay, AK

Average sunshine days in September - Prudhoe Bay, AK
  • Average sunshine days in September: 14 days

The month with the most sunshine days is June (21 days).
The month with the least sunshine days is September (14 days).

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Average UV index in September
Prudhoe Bay, AK

Average UV index in September - Prudhoe Bay, AK
  • Average UV index in September: 1

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

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Average cloud cover in September
Prudhoe Bay, AK

Average cloud cover in September - Prudhoe Bay, AK
  • Average cloud cover in September: 71

Months with the most cloud cover are November and December (Cloud cover 76).
The month with the least cloud cover is June (Cloud cover 45).

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Average visibility in September
Prudhoe Bay, AK

Average visibility in September - Prudhoe Bay, AK
  • Average visibility in September: 6mi

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

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