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
The ushering in of September brings an average high-temperature of a chilly 49.3°F (9.6°C), closely mirroring the 53.2°F (11.8°C) of August. Nighttime temperature sees a small decrement from daytime highs, dipping to an average of 44.8°F (7.1°C) during September.Humidity
In Scammon Bay, the average relative humidity in September is 81%.Rainfall
In Scammon Bay, Alaska, in September, it is raining for 18.3 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, in Scammon Bay, Alaska, there are 119.2 rainfall days, and 18.78" (477mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.7 snowfall days, it receives 0.24" (6mm) of snow. In Scammon Bay, during the entire year, snow falls for 92.1 days and aggregates up to 25.24" (641mm) of snow.Daylight
In Scammon Bay, the average length of the day in September is 12h and 53min.On the first day of September, sunrise is at 7:55 am and sunset at 10:09 pm. On the last day of the month, sunrise is at 9:09 am and sunset at 8:34 pm AKDT.
Sunshine
The average sunshine in September is 3.9h.UV index
In September, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: In September, a daily maximum UV index of 2 leads to the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in Scammon Bay in September?
When does it start snowing?
How many hours of daylight does Scammon Bay have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Scammon Bay have in September?
What is the UV index reading in September?
Average temperature in September
Scammon Bay, AK
- Average high temperature in September: 49.3°F
The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is January (16.2°F).
- Average low temperature in September: 44.8°F
The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in September
Scammon Bay, AK
- Average pressure in September: 29.73"Hg
The months with the highest atmospheric pressure are May and July (29.91"Hg).
The month with the lowest atmospheric pressure is December (29.64"Hg).
Average wind speed in September
Scammon Bay, AK
- Average wind speed in September: 15.2mph
The windiest month (with the highest average wind speed) is October (17.1mph).
The calmest month (with the lowest average wind speed) is May (11.1mph).
Average humidity in September
Scammon Bay, AK
- Average humidity in September: 81%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (79%).
Average rainfall in September
Scammon Bay, AK
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is October (2.72").
The driest month (with the least rainfall) is June (0.87").
Average rainfall days in September
Scammon Bay, AK
- Average rainfall days in September: 18.3 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Scammon Bay, AK
- Average snowfall in September: 0.24"
The month with the highest snowfall is February (4.33").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Scammon Bay, AK
- Average snowfall days in September: 0.7 days
The month with the highest number of snowfall days is December (14.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Scammon Bay, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 30min).
The month with the shortest days is December (Average daylight: 5h and 24min).
- Average sunshine in September: 3h and 5min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in September
Scammon Bay, AK
- Average sunshine days in September: 7.6 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is October (6.8 days).
Average UV index in September
Scammon Bay, AK
- Average UV index in September: 2
The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are January, March, November and December (UV index 1).
Average cloud cover in September
Scammon Bay, AK
- Average cloud cover in September: 71
The months with the most cloud cover are September and December (Cloud cover 71).
The month with the least cloud cover is June (Cloud cover 57).
Average visibility in September
Scammon Bay, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, November and December (5mi).
Scammon Bay, Alaska, USA
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