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
With September's onset, the weather reveals a slight temperature decrease, transitioning from a mild 57.6°F (14.2°C) in August to a cool 50.4°F (10.2°C). In Emmonak, September's low temperatures hover around a cold 42.6°F (5.9°C), reflecting a minor decrease from the daytime highs.Humidity
In September, the average relative humidity is 80%.Rainfall
In Emmonak, in September, during 15.9 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. In Emmonak, 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 Emmonak, Alaska, 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 7:48 am and sunset at 10:07 pm. On the last day of September, sunrise is at 9:06 am and sunset at 8:29 pm AKDT.
Sunshine
In Emmonak, the average sunshine in September is 4.3h.UV index
In September, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 2 during September translates into these guidelines:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Emmonak, 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
Emmonak, 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
Emmonak, 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
Emmonak, 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
Emmonak, 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
Emmonak, 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
Emmonak, 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
Emmonak, 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
Emmonak, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 20h and 0min).
The month with the shortest days is December (Average daylight: 5h and 0min).
- Average sunshine in September: 4h and 2min
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
Emmonak, 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
Emmonak, 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
Emmonak, 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
Emmonak, 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).
Emmonak, Alaska, USA
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