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
Chiniak observes a minor difference in average high-temperatures between August's 57.6°F (14.2°C) and September's 53.1°F (11.7°C). September nights witness a slight temperature decrease, averaging at a chilly 47.7°F (8.7°C).Humidity
In Chiniak, the average relative humidity in September is 83%.Rainfall
In Chiniak, in September, it is raining for 17.6 days, with typically 3.27" (83mm) of accumulated precipitation. In Chiniak, during the entire year, the rain falls for 171.2 days and collects up to 37.32" (948mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Chiniak. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 35.1 snowfall days, and 13.74" (349mm) of snow is accumulated.Daylight
In Chiniak, the average length of the day in September is 12h and 45min.On the first day of the month, sunrise is at 7:12 am and sunset at 9:05 pm. On the last day of September, in Chiniak, sunrise is at 8:13 am and sunset at 7:44 pm AKDT.
Sunshine
The average sunshine in September is 5.8h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 3 during September leads to these advisories:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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 many days does it rain in September?
When does it start to snow?
What is the average length of the day in September in Chiniak?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Chiniak, AK
- Average high temperature in September: 53.1°F
The warmest month (with the highest average high temperature) is August (57.6°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 47.7°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is March (30.6°F).
Average pressure in September
Chiniak, AK
- Average pressure in September: 29.71"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is December (29.55"Hg).
Average wind speed in September
Chiniak, AK
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is December (14.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in September
Chiniak, AK
- Average humidity in September: 83%
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are March and November (80%).
Average rainfall in September
Chiniak, AK
- Average rainfall in September: 3.27"
The wettest months (with the highest rainfall) are October and November (4.53").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in September
Chiniak, AK
- Average rainfall days in September: 17.6 days
The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is March (10.8 days).
Average snowfall in September
Chiniak, AK
- Average snowfall in September: 0.08"
The month with the highest snowfall is March (3.15").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Chiniak, AK
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is March (8.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Chiniak, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 17h and 54min).
The month with the shortest days is December (Average daylight: 6h and 42min).
- Average sunshine in September: 5h and 5min
The month with the most sunshine is July (Average sunshine: 8h and 18min).
The months with the least sunshine are January and December (Average sunshine: 2h and 36min).
Average sunshine days in September
Chiniak, AK
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is July (14.7 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in September
Chiniak, AK
- Average UV index in September: 3
The months with the highest UV index are June, July, August and September (UV index 3).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Chiniak, AK
- Average cloud cover in September: 52
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 52).
Average visibility in September
Chiniak, AK
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Chiniak, Alaska, USA
Weather forecast for your location
2. Allow the app to use your location