September weather forecast and climate
Rowan Bay, AK

Weather in September

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

Temperature

In September, the average high-temperature is essentially the same as in August - a fresh 55.2°F (12.9°C). The average low-temperature, in September, is 52°F (11.1°C).

Humidity

The average relative humidity in Rowan Bay is 84%.

Rainfall

In Rowan Bay, Alaska, in September, it is raining for 19.4 days, with typically 6.97" (177mm) of accumulated precipitation. 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 12.7h.

Sunshine

In Rowan Bay, the average sunshine is 6.7h.

UV index

The average daily maximum UV index in Rowan Bay is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 3 in September transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the temperature in September in Rowan Bay?

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

What is the average humidity in September in Rowan Bay?

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

How much does it rain in Rowan Bay in September?

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.

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

In Rowan Bay, Alaska, the average length of the day in September is 12.7h.

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

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

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

In Rowan Bay, Alaska, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

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"

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

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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%).
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").
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).
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: 12.7h

The month with the longest days is June (Average daylight: 17.7h).
The month with the shortest days is December (Average daylight: 6.9h).

  • Average sunshine in September: 6.7h

The month with the most sunshine is May (Average sunshine: 7.2h).
The month with the least sunshine is January (Average sunshine: 2.8h).

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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

Months with the highest UV index are July and August (UV index 4).
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).
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

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

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