September weather forecast
Usibelli, AK

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Weather in September

September, the first month of the autumn in Usibelli, is also a frosty month, with an average temperature varying between 34°F (1.1°C) and 47.1°F (8.4°C).

Temperature

September brings a minor decrease, with the average high-temperature reducing from a moderate 57.6°F (14.2°C) in August to a frosty 47.1°F (8.4°C). The nights of September in Usibelli anticipate an average low-temperature of 34°F (1.1°C).

Humidity

The average relative humidity in September in Usibelli is 80%.

Rainfall

In Usibelli, during September, the rain falls for 12.7 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Usibelli, during the entire year, the rain falls for 106.3 days and collects up to 14.49" (368mm) of precipitation.

Snowfall

Months with snowfall are January through May, August through December. In Usibelli, Alaska, in September, snow falls for 2.8 days, with typically accumulated 1.73" (44mm) of snow. In Usibelli, during the entire year, snow falls for 93.4 days and aggregates up to 35.94" (913mm) of snow.

Daylight

The average length of the day in September in Usibelli is 12h and 58min.
On the first day of September in Usibelli, sunrise is at 6:41 am and sunset at 9:08 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 7:25 pm AKDT.

Sunshine

The average sunshine in September is 7.4h.

UV index

In Usibelli, Alaska, the average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 2 in September translates 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 Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What is the average September temperature in Usibelli?

The high-temperature, in September, in Usibelli, is 47.1°F (8.4°C), while the low-temperature averages to 34°F (1.1°C).

What is the average humidity in September in Usibelli?

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

How many days does it rain in September in Usibelli?

In Usibelli, in September, it is raining for 12.7 days, with typically 1.3" (33mm) of accumulated precipitation.

How much does it snow in Usibelli in September?

In Usibelli, in September, snow falls for 2.8 days, with typically accumulated 1.73" (44mm) of snow.

How many hours of daylight does Usibelli have in September?

In September, the average day length is 12h and 58min.

When is the sunrise / sunset in September in Usibelli?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 9:08 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 7:25 pm AKDT.

How long on average sun shines in September in Usibelli?

In September, the average sunshine duration in Usibelli, Alaska, is 7.4h.

What is the UV index reading in September in Usibelli?

The average daily maximum UV index in September in Usibelli, Alaska, is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to 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
Usibelli, AK

Average temperature in September - Usibelli, AK
  • Average high temperature in September: 47.1°F

The warmest month (with the highest average high temperature) is July (62.8°F).
The month with the lowest average high temperature is January (4.6°F).

  • Average low temperature in September: 34°F

The month with the highest average low temperature is July (45.3°F).
The coldest month (with the lowest average low temperature) is January (-6.3°F).

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Average pressure in September
Usibelli, AK

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

The month with the highest atmospheric pressure is February (29.93"Hg).
The month with the lowest atmospheric pressure is September (29.76"Hg).

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Average wind speed in September
Usibelli, AK

Average wind speed in September - Usibelli, AK
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is May (5.5mph).
The calmest months (with the lowest average wind speed) are March and November (4.6mph).

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Average humidity in September
Usibelli, AK

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

The month with the highest relative humidity is March (93%).
The month with the lowest relative humidity is June (64%).

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Average rainfall in September
Usibelli, AK

Average rainfall in September - Usibelli, AK
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in September
Usibelli, AK

Average rainfall days in September - Usibelli, AK
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is June (19.6 days).
The months with the least rainy days are February and December (1.5 days).

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Average snowfall in September
Usibelli, AK

Average snowfall in September - Usibelli, AK
  • Average snowfall in September: 1.73"

The month with the highest snowfall is March (6.89").
The months with the least snowfall are June and July (0").

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Average snowfall days in September
Usibelli, AK

Average snowfall days in September - Usibelli, AK
  • Average snowfall days in September: 2.8 days

The month with the highest number of snowfall days is March (17.4 days).
The months with the least snowfall days are June and July (0 days).

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

Average daylight in September / Average sunshine in September - Usibelli, AK
  • Average daylight in September: 13h and 0min

The month with the longest days is June (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 4h and 30min).

  • Average sunshine in September: 7h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 18min).

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Average sunshine days in September
Usibelli, AK

Average sunshine days in September - Usibelli, AK
  • Average sunshine days in September: 13 days

The month with the most sunshine days is January (21.2 days).
The month with the least sunshine days is June (8.5 days).

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Average UV index in September
Usibelli, AK

Average UV index in September - Usibelli, 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 January, February, March, November and December (UV index 1).

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Average cloud cover in September
Usibelli, AK

Average cloud cover in September - Usibelli, AK
  • Average cloud cover in September: 49

The month with the most cloud cover is March (Cloud cover 61).
The month with the least cloud cover is May (Cloud cover 42).

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Average visibility in September
Usibelli, AK

Average visibility in September - Usibelli, AK
  • Average visibility in September: 5mi

The months with the highest visibility are May, June and July (6mi).
The months with the lowest visibility are January and March (3mi).

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Usibelli, Alaska, USA

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