September weather forecast
Rowan Bay, AK

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Weather in September

The first month of the autumn, September, is also a fresh month in Rowan Bay, Alaska, with an average temperature fluctuating between 52°F (11.1°C) and 55.2°F (12.9°C).

Temperature

September welcomes an average high-temperature of a fresh 55.2°F (12.9°C), not much different from the preceding month. The month of September in Rowan Bay, Alaska, shows a minor drop from daytime temperatures, generally recording a low average of 52°F (11.1°C).

Humidity

In September, the average relative humidity is 84%.

Rainfall

In Rowan Bay, in September, during 19.4 rainfall days, 6.97" (177mm) of precipitation is typically accumulated. In Rowan Bay, Alaska, during the entire year, the rain falls for 223.5 days and collects up to 72.17" (1833mm) of precipitation.

Snowfall

In Rowan Bay, snow does not fall in May through October.

Daylight

In Rowan Bay, the average length of the day in September is 12h and 44min.
On the first day of the month, sunrise is at 6:01 am and sunset at 7:51 pm. On the last day of September, in Rowan Bay, sunrise is at 7:00 am and sunset at 6:33 pm AKDT.

Sunshine

In Rowan Bay, the average sunshine in September is 6.7h.

UV index

The average daily maximum UV index in September in Rowan Bay, Alaska, is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 3 during September leads to these advisories:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the average September temperature in Rowan Bay?

The high-temperature, in September, in Rowan Bay, is 55.2°F (12.9°C), while the low-temperature averages to 52°F (11.1°C).

What is the average humidity in September in Rowan Bay?

In September, the average relative humidity is 84%.

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

In Rowan Bay, Alaska, during September, the rain falls for 19.4 days and regularly aggregates up to 6.97" (177mm) of precipitation.

When it does not snow in Rowan Bay?

In Rowan Bay, Alaska, snow does not fall in May through October.

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

In Rowan Bay, the average day length in September is 12h and 44min.

What time are sunrise and sunset in September in Rowan Bay?

In September, on the first day of the month, sunrise is at 6:01 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:33 pm AKDT.

How many hours of sunshine does Rowan Bay have in September?

In Rowan Bay, Alaska, the average sunshine duration in September is 6.7h.

What is the UV index intensity in September in Rowan Bay?

In September, the average daily maximum UV index in Rowan Bay is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Rowan Bay, AK

Average temperature in September - Rowan Bay, AK
  • Average high temperature in September: 55.2°F

The warmest month (with the highest average high temperature) is August (57.6°F).
The month with the lowest average high temperature is February (39.6°F).

  • Average low temperature in September: 52°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (35.4°F).

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Average pressure in September
Rowan Bay, AK

Average pressure in September - Rowan Bay, AK
  • Average pressure in September: 29.88"Hg

The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.72"Hg).

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Average wind speed in September
Rowan Bay, AK

Average wind speed in September - Rowan Bay, AK
  • Average wind speed in September: 11.8mph

The windiest month (with the highest average wind speed) is January (17mph).
The calmest months (with the lowest average wind speed) are June and July (8.9mph).

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Average humidity in September
Rowan Bay, AK

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

The month with the highest relative humidity is August (89%).
The months with the lowest relative humidity are February and March (78%).

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Average rainfall in September
Rowan Bay, AK

Average rainfall in September - Rowan Bay, AK
  • Average rainfall in September: 6.97"

The wettest month (with the highest rainfall) is November (9.69").
The driest month (with the least rainfall) is May (3.07").

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Average rainfall days in September
Rowan Bay, AK

Average rainfall days in September - Rowan Bay, AK
  • Average rainfall days in September: 19.4 days

The month with the highest number of rainy days is November (23.1 days).
The month with the least rainy days is February (14.2 days).

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Average snowfall in September
Rowan Bay, AK

Average snowfall in September - Rowan Bay, AK
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.88").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Rowan Bay, AK

Average snowfall days in September - Rowan Bay, AK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is March (8.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Rowan Bay, AK
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).

  • Average sunshine in September: 6h and 4min

The month with the most sunshine is May (Average sunshine: 7h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

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Average sunshine days in September
Rowan Bay, AK

Average sunshine days in September - Rowan Bay, AK
  • Average sunshine days in September: 9.4 days

The month with the most sunshine days is May (13.6 days).
The month with the least sunshine days is November (5.3 days).

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Average UV index in September
Rowan Bay, AK

Average UV index in September - Rowan Bay, AK
  • Average UV index in September: 3

The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in September
Rowan Bay, AK

Average cloud cover in September - Rowan Bay, AK
  • Average cloud cover in September: 55

The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are May and September (Cloud cover 55).

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Average visibility in September
Rowan Bay, AK

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

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

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Rowan Bay, Alaska, USA

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