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 ushers in a minute temperature change, with average high-temperatures reducing from August's mild 60.4°F (15.8°C) to a cool 54.3°F (12.4°C). South Naknek, in September, observes a steady average low-temperature of 42.4°F (5.8°C).Humidity
The average relative humidity in September is 81%.Rainfall
In South Naknek, in September, it is raining for 17.5 days, with typically 2.05" (52mm) of accumulated precipitation. In South Naknek, during the entire year, the rain falls for 158.9 days and collects up to 18.43" (468mm) of precipitation.Snowfall
June through September are months without snowfall in South Naknek.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, 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 September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 2 in September translates into the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for South Naknek in September?
What is the average humidity in September in South Naknek?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does South Naknek have in September?
What is the UV index intensity in September?
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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