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
September's arrival subtly correlates with a reduction in the average high-temperature, down from a refreshing 60.4°F (15.8°C) in August to a fresh 54.3°F (12.4°C). Throughout September, South Naknek witnesses a nighttime temperature average of 42.4°F (5.8°C).Humidity
In South Naknek, the average relative humidity in September is 81%.Rainfall
In South Naknek, in September, during 17.5 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In South Naknek, Alaska, during the entire year, the rain falls for 158.9 days and collects up to 18.43" (468mm) of precipitation.Snowfall
In South Naknek, snow does not fall in June through September.Daylight
In South Naknek, the average length of the day in September is 12h and 47min.On the first day of the month, sunrise is at 7:28 am and sunset at 9:26 pm. On the last day of September, in South Naknek, Alaska, sunrise is at 8:32 am and sunset at 8:02 pm AKDT.
Sunshine
The average sunshine in September is 5.4h.UV index
In South Naknek, the average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 2 in September translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What are the temperatures in South Naknek in September?
What is the average humidity in September in South Naknek?
How many days does it rain in September in South Naknek?
When it does not snow in South Naknek?
Does it snow in South Naknek in September?
How many hours of daylight does South Naknek have in September?
When is the sunrise / sunset in September in South Naknek?
How long on average sun shines in September in South Naknek?
What is the UV index intensity in September in South Naknek?
Average temperature in September
South Naknek, AK
- Average high temperature in September: 54.3°F
The warmest month (with the highest average high temperature) is July (62.4°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in September: 42.4°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in September
South Naknek, AK
- Average pressure in September: 29.72"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is December (29.6"Hg).
Average wind speed in September
South Naknek, AK
- Average wind speed in September: 9mph
The windiest month (with the highest average wind speed) is December (10.4mph).
The calmest month (with the lowest average wind speed) is June (7.6mph).
Average humidity in September
South Naknek, AK
- Average humidity in September: 81%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
South Naknek, AK
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is August (2.2").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
South Naknek, AK
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is March (6.7 days).
Average snowfall in September
South Naknek, AK
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
South Naknek, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
South Naknek, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is June (Average sunshine: 8h and 12min).
The months with the least sunshine are January and December (Average sunshine: 3h and 6min).
Average sunshine days in September
South Naknek, AK
- Average sunshine days in September: 11 days
The month with the most sunshine days is January (15.3 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in September
South Naknek, AK
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in September
South Naknek, AK
- Average cloud cover in September: 58
The month with the most cloud cover is August (Cloud cover 65).
The months with the least cloud cover are January and May (Cloud cover 55).
Average visibility in September
South Naknek, AK
- Average visibility in September: 6mi
The months with the highest visibility are January, February, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is March (5mi).
South Naknek, Alaska, USA
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