Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September registers an average high-temperature of a cool 51.6°F (10.9°C), slightly varied from August's 56.3°F (13.5°C). In Larsen Bay, the nighttime temperature in September descends gently to an average of 45.9°F (7.7°C).Humidity
In Larsen Bay, the average relative humidity in September is 83%.Rainfall
In Larsen Bay, during September, the rain falls for 18.8 days and regularly aggregates up to 3.43" (87mm) of precipitation. In Larsen Bay, during the entire year, the rain falls for 201 days and collects up to 34.33" (872mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 59 snowfall days, and 25.04" (636mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 45min.On the first day of September, sunrise is at 7:19 am and sunset at 9:12 pm. On the last day of the month, sunrise is at 8:19 am and sunset at 7:51 pm AKDT.
Sunshine
In Larsen Bay, the average sunshine in September is 5.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow?
How many hours of daylight does Larsen Bay have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Larsen Bay have in September?
How high is the UV index in September?
Average temperature in September
Larsen Bay, AK
- Average high temperature in September: 51.6°F
The warmest month (with the highest average high temperature) is August (56.3°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 45.9°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is March (26.6°F).
Average pressure in September
Larsen Bay, AK
- Average pressure in September: 29.71"Hg
The month with the highest atmospheric pressure is July (29.97"Hg).
The month with the lowest atmospheric pressure is December (29.56"Hg).
Average wind speed in September
Larsen Bay, AK
- Average wind speed in September: 10.6mph
The windiest month (with the highest average wind speed) is December (14mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in September
Larsen Bay, AK
- Average humidity in September: 83%
The months with the highest relative humidity are July and August (86%).
The month with the lowest relative humidity is May (80%).
Average rainfall in September
Larsen Bay, AK
- Average rainfall in September: 3.43"
The wettest month (with the highest rainfall) is October (4.06").
The driest month (with the least rainfall) is June (1.89").
Average rainfall days in September
Larsen Bay, AK
- Average rainfall days in September: 18.8 days
The months with the highest number of rainy days are May, September and October (18.8 days).
The month with the least rainy days is March (12.7 days).
Average snowfall in September
Larsen Bay, AK
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Larsen Bay, AK
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is March (11.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Larsen Bay, AK
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 54min).
The month with the shortest days is December (Average daylight: 6h and 42min).
- Average sunshine in September: 5h and 5min
The month with the most sunshine is June (Average sunshine: 8h and 6min).
The months with the least sunshine are January and December (Average sunshine: 2h and 42min).
Average sunshine days in September
Larsen Bay, AK
- Average sunshine days in September: 8.9 days
The month with the most sunshine days is July (11.9 days).
The month with the least sunshine days is February (7 days).
Average UV index in September
Larsen Bay, AK
- Average UV index in September: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Larsen Bay, AK
- Average cloud cover in September: 55
The months with the most cloud cover are February and December (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 55).
Average visibility in September
Larsen 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).
Larsen Bay, Alaska, USA
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