September weather forecastKotlik, AK
September
Weather in September
The first month of the autumn, September, is also a fresh month in Kotlik, Alaska, with an average temperature fluctuating between 50.4°F (10.2°C) and 42.6°F (5.9°C).Temperature
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's moderate 57.6°F (14.2°C) to a cool 50.4°F (10.2°C). Kotlik observes a slightly reduced average nighttime temperature of 42.6°F (5.9°C) during September.Humidity
In September, the average relative humidity in Kotlik is 80%.Rainfall
In Kotlik, in September, during 15.9 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. In Kotlik, during the entire year, the rain falls for 113.9 days and collects up to 13.46" (342mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 1.2 snowfall days, it receives 0.16" (4mm) of snow. In Kotlik, during the entire year, snow falls for 88.6 days and aggregates up to 19.76" (502mm) of snow.Daylight
In September, the average length of the day is 12h and 55min.On the first day of the month, sunrise is at 7:43 am and sunset at 10:04 pm. On the last day of September, in Kotlik, sunrise is at 9:02 am and sunset at 8:25 pm AKDT.
Sunshine
The average sunshine in September is 4.3h.UV index
In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in September converts into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kotlik, AK
- Average high temperature in September: 50.4°F
The warmest month (with the highest average high temperature) is July (59°F).
The month with the lowest average high temperature is January (13.1°F).
- Average low temperature in September: 42.6°F
The month with the highest average low temperature is July (48.6°F).
The coldest month (with the lowest average low temperature) is January (5.9°F).
Average pressure in September
Kotlik, AK
- Average pressure in September: 29.73"Hg
The month with the highest atmospheric pressure is May (29.92"Hg).
The month with the lowest atmospheric pressure is October (29.67"Hg).
Average wind speed in September
Kotlik, AK
- Average wind speed in September: 11.9mph
The windiest month (with the highest average wind speed) is February (13.3mph).
The calmest month (with the lowest average wind speed) is May (10.1mph).
Average humidity in September
Kotlik, AK
- Average humidity in September: 80%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is June (71%).
Average rainfall in September
Kotlik, AK
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is March (0.75").
Average rainfall days in September
Kotlik, AK
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in September
Kotlik, AK
- Average snowfall in September: 0.16"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Kotlik, AK
- Average snowfall days in September: 1.2 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Kotlik, AK
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 20h and 6min).
The month with the shortest days is December (Average daylight: 4h and 54min).
- Average sunshine in September: 4h and 18min
The month with the most sunshine is May (Average sunshine: 7h and 48min).
The months with the least sunshine are January and December (Average sunshine: 2h and 18min).
Average sunshine days in September
Kotlik, AK
- Average sunshine days in September: 9.9 days
The month with the most sunshine days is January (15.8 days).
The month with the least sunshine days is September (9.9 days).
Average UV index in September
Kotlik, 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 January, November and December (UV index 1).
Average cloud cover in September
Kotlik, AK
- Average cloud cover in September: 67
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is June (Cloud cover 53).
Average visibility in September
Kotlik, 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).
