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
The beginning of September records an average high-temperature of a frosty 49.3°F (9.6°C), almost echoing the conditions of the previous month. In September, Chefornak's nights cool slightly to a consistent average temperature of 46.2°F (7.9°C).Humidity
In September, the average relative humidity is 83%.Rainfall
The month with the most rainfall is September, when the rain falls for 21.1 days and typically aggregates up to 2.83" (72mm) of precipitation.Snowfall
July through September are months without snowfall in Chefornak.Daylight
In September, the average length of the day is 12h and 49min.On the first day of September, sunrise is at 7:54 am and sunset at 9:59 pm. On the last day of the month, sunrise is at 9:02 am and sunset at 8:30 pm AKDT.
Sunshine
In Chefornak, the average sunshine in September is 3.6h.UV index
In Chefornak, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the average maximum UV index of 2 translates into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the rainiest month?
How many days does it rain in September in Chefornak?
When it does not snow?
Does it snow in Chefornak in September?
How many hours of daylight does Chefornak have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Chefornak have in September?
How high is the UV index in September?
Average temperature in September
Chefornak, AK
- Average high temperature in September: 49.3°F
The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is January (19.4°F).
- Average low temperature in September: 46.2°F
The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in September
Chefornak, AK
- Average pressure in September: 29.72"Hg
The month with the highest atmospheric pressure is July (29.92"Hg).
The month with the lowest atmospheric pressure is December (29.6"Hg).
Average wind speed in September
Chefornak, AK
- Average wind speed in September: 16.4mph
The windiest month (with the highest average wind speed) is November (19.3mph).
The calmest month (with the lowest average wind speed) is July (11.7mph).
Average humidity in September
Chefornak, AK
- Average humidity in September: 83%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (79%).
Average rainfall in September
Chefornak, AK
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is September (2.83").
The driest month (with the least rainfall) is June (0.87").
Average rainfall days in September
Chefornak, AK
- Average rainfall days in September: 21.1 days
The month with the highest number of rainy days is September (21.1 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Chefornak, AK
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.78").
The months with the least snowfall are July, August and September (0").
Average snowfall days in September
Chefornak, AK
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Chefornak, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in September: 3h and 4min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in September
Chefornak, AK
- Average sunshine days in September: 4.7 days
The month with the most sunshine days is May (14.7 days).
The month with the least sunshine days is September (4.7 days).
Average UV index in September
Chefornak, AK
- Average UV index in September: 2
The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are January, April, November and December (UV index 1).
Average cloud cover in September
Chefornak, AK
- Average cloud cover in September: 74
The months with the most cloud cover are September and December (Cloud cover 74).
The month with the least cloud cover is May (Cloud cover 59).
Average visibility in September
Chefornak, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, November and December (5mi).
Chefornak, Alaska, USA
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