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 marks the arrival of September with an average high-temperature of a fresh 53.1°F (11.7°C), hardly different from August's 57.6°F (14.2°C). Chiniak records a slight downturn in temperature to an average of 47.7°F (8.7°C) during September nights.Humidity
In September, the average relative humidity is 83%.Rainfall
In Chiniak, during September, the rain falls for 17.6 days and regularly aggregates up to 3.27" (83mm) of precipitation. Throughout the year, in Chiniak, Alaska, there are 171.2 rainfall days, and 37.32" (948mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. 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, in Chiniak, there are 35.1 snowfall days, and 13.74" (349mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 45min.On the first day of September in Chiniak, sunrise is at 7:12 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 8:13 am and sunset at 7:44 pm AKDT.
Sunshine
The average sunshine in September in Chiniak is 5.8h.UV index
The months with the highest UV index in Chiniak are June through September, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What are September temperatures in Chiniak?
What is the average humidity in September in Chiniak?
How many days does it rain in September in Chiniak?
When does it start to snow in Chiniak?
How many hours of daylight does Chiniak have in September?
When is the sunrise / sunset in September in Chiniak?
How many hours of sunshine does Chiniak have in September?
What is the month with the highest UV index in Chiniak?
How high is the UV index in September in Chiniak?
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
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