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 onset corresponds with a subtle shift in the average high-temperature, slightly moving from a refreshing 60.4°F (15.8°C) in August to a fresh 54.3°F (12.4°C). King Salmon observes an average nighttime low-temperature of 42.4°F (5.8°C) during the month of September.Humidity
In September, the average relative humidity is 81%.Rainfall
In King Salmon, in September, it is raining for 17.5 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 158.9 rainfall days, and 18.43" (468mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in King Salmon.Daylight
The average length of the day in September is 12h and 47min.On the first day of September, sunrise is at 7:27 am and sunset at 9:25 pm. On the last day of the month, sunrise is at 8:31 am and sunset at 8:01 pm AKDT.
Sunshine
The average sunshine in September is 5.4h.UV index
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 radiation for the ordinary person.Note: A maximum UV index of 2 in September translates into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in King Salmon?
Does it snow in September?
How many hours of daylight does King Salmon have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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
King Salmon, 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).
King Salmon, Alaska, USA
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