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 sea temperature 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
The beginning of September in Dillingham brings a slight decrease in the average high-temperature, transitioning from an enjoyable 61.2°F (16.2°C) in August to a cool 54.1°F (12.3°C). Throughout the nights in September, an average low-temperature of 41.9°F (5.5°C) is noted in Dillingham, Alaska.Humidity
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 15.2 days. Throughout September, 2.56" (65mm) of precipitation is accumulated. Throughout the year, there are 142.3 rainfall days, and 25.12" (638mm) of precipitation is accumulated.Snowfall
In Dillingham, snow does not fall in June through September.Ocean temperature
In Dillingham, the average seawater temperature in September is 52.3°F (11.3°C).Note: Caution: 52.3°F (11.3°C) temperatures below 50°F (10°C) during swimming can result in intense cold shock and quickened breathing.
Daylight
In September, the average length of the day in Dillingham is 12h and 47min.On the first day of September in Dillingham, sunrise is at 7:33 am and sunset at 9:33 pm. On the last day of the month, sunrise is at 8:38 am and sunset at 8:08 pm AKDT.
Sunshine
In Dillingham, 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 vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 2 in September interprets into the following advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What are September temperatures in Dillingham?
What is the average humidity in September in Dillingham?
How much does it rain in Dillingham in September?
When it does not snow in Dillingham?
Does it snow in Dillingham in September?
What is the ocean temperature in September in Dillingham?
What is the average length of the day in September in Dillingham?
When is the sunrise / sunset in September in Dillingham?
How long on average sun shines in September in Dillingham?
How high is the UV index in September in Dillingham?
Average temperature in September
Dillingham, AK
- Average high temperature in September: 54.1°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 (17.4°F).
- Average low temperature in September: 41.9°F
The month with the highest average low temperature is July (49.1°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in September
Dillingham, AK
- Average pressure in September: 29.72"Hg
The month with the highest atmospheric pressure is July (29.95"Hg).
The month with the lowest atmospheric pressure is December (29.61"Hg).
Average wind speed in September
Dillingham, AK
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is June (7.9mph).
Average humidity in September
Dillingham, AK
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (68%).
Average rainfall in September
Dillingham, AK
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is June (1.42").
Average rainfall days in September
Dillingham, AK
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is August (18.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Dillingham, AK
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.4").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Dillingham, AK
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is March (11.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average sea temperature in September
Dillingham, AK
- Average sea temperature in September: 52.3°F
The best month for swimming (with the highest average sea temperature) is August (54.3°F).
The coldest month (with the lowest average sea temperature) is February (31.6°F).
Average daylight in September /
Average sunshine in September
Dillingham, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is June (Average sunshine: 8h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Dillingham, AK
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is March (16.2 days).
The month with the least sunshine days is August (11.2 days).
Average UV index in September
Dillingham, AK
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Dillingham, AK
- Average cloud cover in September: 57
The month with the most cloud cover is August (Cloud cover 62).
The months with the least cloud cover are June and November (Cloud cover 54).
Average visibility in September
Dillingham, AK
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
Dillingham, Alaska, USA
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