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 beginning of September records an average high-temperature of a chilly 44.8°F (7.1°C), almost echoing the conditions of the previous month. September records a small disparity from daytime temperatures, marking an average low-temperature of 41°F (5°C).Humidity
In Brevig Mission, the average relative humidity in September is 81%.Rainfall
In Brevig Mission, Alaska, in September, during 12.5 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 86.5 rainfall days, and 14.25" (362mm) 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 2.7 snowfall days, it receives 0.28" (7mm) of snow. Throughout the year, there are 90 snowfall days, and 20.51" (521mm) of snow is accumulated.Daylight
The average length of the day in September is 13h and 1min.On the first day of September, sunrise is at 7:47 am and sunset at 10:23 pm. On the last day of the month, sunrise is at 9:16 am and sunset at 8:35 pm AKDT.
Sunshine
In Brevig Mission, the average sunshine in September is 4.9h.UV index
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 unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 2 transforms into these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Brevig Mission?
How high is the UV index in September?
Average temperature in September
Brevig Mission, AK
- Average high temperature in September: 44.8°F
The warmest month (with the highest average high temperature) is August (50°F).
The month with the lowest average high temperature is January (9°F).
- Average low temperature in September: 41°F
The month with the highest average low temperature is August (45.3°F).
The coldest months (with the lowest average low temperature) are February and March (1.8°F).
Average pressure in September
Brevig Mission, AK
- Average pressure in September: 29.77"Hg
The month with the highest atmospheric pressure is May (29.96"Hg).
The month with the lowest atmospheric pressure is October (29.72"Hg).
Average wind speed in September
Brevig Mission, AK
- Average wind speed in September: 14.9mph
The windiest month (with the highest average wind speed) is December (17.5mph).
The calmest month (with the lowest average wind speed) is May (12mph).
Average humidity in September
Brevig Mission, AK
- Average humidity in September: 81%
The month with the highest relative humidity is March (93%).
The months with the lowest relative humidity are October and November (79%).
Average rainfall in September
Brevig Mission, AK
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Brevig Mission, AK
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (1.3 days).
Average snowfall in September
Brevig Mission, AK
- Average snowfall in September: 0.28"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Brevig Mission, AK
- Average snowfall days in September: 2.7 days
The month with the highest number of snowfall days is April (13 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Brevig Mission, AK
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 22h and 6min).
The month with the shortest days is December (Average daylight: 3h and 42min).
- Average sunshine in September: 4h and 5min
The month with the most sunshine is August (Average sunshine: 5h and 42min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in September
Brevig Mission, AK
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is June (18.4 days).
The month with the least sunshine days is October (11.1 days).
Average UV index in September
Brevig Mission, AK
- Average UV index in September: 2
The month with the highest UV index is July (UV index 3).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Brevig Mission, AK
- Average cloud cover in September: 65
The month with the most cloud cover is February (Cloud cover 78).
The month with the least cloud cover is June (Cloud cover 52).
Average visibility in September
Brevig Mission, 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).
Brevig Mission, Alaska, USA
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