September weather forecastKotzebue, AK
September
Weather in September
September signals the beginning of Kotzebue's weather shift, with temperatures dropping and snowfall reappearing at 0.35" (9mm). The abrupt plunge intimates the retreat of summer and the impending arrival of winter. The landscape begins its transformation from lush greenery to a barren winter wonderland. Despite the initiate cold, daylight hours remain relatively long, allowing for the enjoyment of outdoor activities with the proper attire.Temperature
A subtle shift in Kotzebue's weather is observed as August turns into September, with the average high temperature reducing from a fresh 54.5°F (12.5°C) to a frosty 46.6°F (8.1°C). Kotzebue, during September nights, records a temperature marginally cooler than the daytime average, at an icy 40.8°F (4.9°C).Humidity
The average relative humidity in September is 75%.Rainfall
In Kotzebue, during September, the rain falls for 11.1 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Kotzebue, during the entire year, the rain falls for 83.3 days and collects up to 11.85" (301mm) 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 2.7 snowfall days, it receives 0.35" (9mm) of snow. In Kotzebue, Alaska, during the entire year, snow falls for 86.9 days and aggregates up to 21.46" (545mm) of snow.Ocean temperature
In Kotzebue, in September, the average water temperature is 46.8°F (8.2°C).Note: Immersing oneself in 46.8°F (8.2°C) at sub14°F (-10°C) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.
Daylight
The average length of the day in September is 13h and 5min.On the first day of September, sunrise is at 7:25 am and sunset at 10:14 pm. On the last day of the month, sunrise is at 9:02 am and sunset at 8:17 pm AKDT.
Sunshine
The average sunshine in September is 6.2h.UV index
In Kotzebue, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 2 during September leads to these instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kotzebue, AK
- Average high temperature in September: 46.6°F
The warmest month (with the highest average high temperature) is July (54.9°F).
The month with the lowest average high temperature is January (6.3°F).
- Average low temperature in September: 40.8°F
The month with the highest average low temperature is August (48.4°F).
The coldest month (with the lowest average low temperature) is January (-1.1°F).
Average pressure in September
Kotzebue, AK
- Average pressure in September: 29.77"Hg
The month with the highest atmospheric pressure is March (29.96"Hg).
The months with the lowest atmospheric pressure are September and October (29.77"Hg).
Average wind speed in September
Kotzebue, AK
- Average wind speed in September: 11.2mph
The windiest month (with the highest average wind speed) is October (13.3mph).
The calmest month (with the lowest average wind speed) is May (7.9mph).
Average humidity in September
Kotzebue, AK
- Average humidity in September: 75%
The months with the highest relative humidity are February and March (90%).
The month with the lowest relative humidity is June (74%).
Average rainfall in September
Kotzebue, AK
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is August (1.85").
The driest month (with the least rainfall) is June (0.47").
Average rainfall days in September
Kotzebue, AK
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is August (15.2 days).
The months with the least rainy days are January and December (2.3 days).
Average snowfall in September
Kotzebue, AK
- Average snowfall in September: 0.35"
The month with the highest snowfall is March (3.98").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Kotzebue, AK
- Average snowfall days in September: 2.7 days
The month with the highest number of snowfall days is December (12.6 days).
The month with the least snowfall days is July (0 days).
Average sea temperature in September
Kotzebue, AK
- Average sea temperature in September: 46.6°F
The best month for swimming (with the highest average sea temperature) is August (54.2°F).
The coldest month (with the lowest average sea temperature) is December (29.4°F).
Average daylight in September /
Average sunshine in September
Kotzebue, AK
- Average daylight in September: 13h and 6min
The month with the longest days is May (Average daylight: 20h and 0min).
The month with the shortest days is June (Average daylight: 0h and 48min).
- Average sunshine in September: 6h and 12min
The month with the most sunshine is August (Average sunshine: 7h and 48min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in September
Kotzebue, AK
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is June (20.5 days).
The month with the least sunshine days is August (13 days).
Average UV index in September
Kotzebue, AK
- Average UV index in September: 2
The months with the highest UV index are May, June, July and August (UV index 3).
The months with the lowest UV index are February, April, November and December (UV index 1).
Average cloud cover in September
Kotzebue, AK
- Average cloud cover in September: 51
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is June (Cloud cover 39).
Average visibility in September
Kotzebue, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April and December (5mi).
