September weather forecastKustatan, AK
September
Weather in September
The first month of the autumn, September, is still a cool month in Kustatan, Alaska, with an average temperature ranging between min 46°F (7.8°C) and max 52°F (11.1°C).Temperature
September's arrival signals a moderate reduction in the average high-temperature, easing from a mild 57.6°F (14.2°C) in August to a fresh 52°F (11.1°C). Kustatan logs an average low-temperature of 46°F (7.8°C) during the nights of September, subtly lower than its daytime highs.Humidity
In September, the average relative humidity is 78%.Rainfall
In Kustatan, in September, during 15.6 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, there are 128.2 rainfall days, and 20.08" (510mm) of precipitation is accumulated.Snowfall
In Kustatan, snow does not fall in June through September.Daylight
In Kustatan, the average length of the day in September is 12h and 50min.On the first day of the month, sunrise is at 7:02 am and sunset at 9:10 pm. On the last day of September, sunrise is at 8:13 am and sunset at 7:40 pm AKDT.
Sunshine
The average sunshine in September is 6.6h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kustatan, AK
- Average high temperature in September: 52°F
The warmest month (with the highest average high temperature) is July (58.6°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 46°F
The month with the highest average low temperature is July (51.1°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Kustatan, AK
- Average pressure in September: 29.73"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.65"Hg).
Average wind speed in September
Kustatan, AK
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is December (11mph).
The calmest month (with the lowest average wind speed) is May (7.5mph).
Average humidity in September
Kustatan, AK
- Average humidity in September: 78%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Kustatan, AK
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is October (2.91").
The driest month (with the least rainfall) is June (0.71").
Average rainfall days in September
Kustatan, AK
- Average rainfall days in September: 15.6 days
The month with the highest number of rainy days is September (15.6 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in September
Kustatan, AK
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Kustatan, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Kustatan, AK
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in September: 6h and 36min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Kustatan, AK
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is June (18.7 days).
The month with the least sunshine days is September (13.1 days).
Average UV index in September
Kustatan, AK
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Kustatan, AK
- Average cloud cover in September: 49
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is June (Cloud cover 40).
Average visibility in September
Kustatan, 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).
