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 shift into September brings a noticeable decrease in the average high-temperature, falling from an enjoyable 65.8°F (18.8°C) in August to a fresh 50.9°F (10.5°C). Chalkyitsik, during September, witnesses an average low-temperature of 36.5°F (2.5°C).Humidity
In Chalkyitsik, the average relative humidity in September is 72%.Rainfall
In September, the rain falls for 9.5 days. Throughout September, 0.71" (18mm) of precipitation is accumulated. In Chalkyitsik, during the entire year, the rain falls for 63.3 days and collects up to 6.57" (167mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 2.2 snowfall days, it receives 0.71" (18mm) of snow. Throughout the year, there are 96.1 snowfall days, and 20.63" (524mm) of snow is accumulated.Daylight
In Chalkyitsik, Alaska, the average length of the day in September is 13h and 5min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:58 pm. On the last day of September, sunrise is at 7:46 am and sunset at 7:02 pm AKDT.
Sunshine
In Chalkyitsik, the average sunshine in September is 7.2h.UV index
January through March, September through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 1 in September interprets into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly 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 many days does it rain in September?
When does it start snowing?
How many hours of daylight does Chalkyitsik have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Chalkyitsik have in September?
What are the months with the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Chalkyitsik, AK
- Average high temperature in September: 50.9°F
The warmest month (with the highest average high temperature) is July (74.3°F).
The month with the lowest average high temperature is January (-6.3°F).
- Average low temperature in September: 36.5°F
The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is January (-18°F).
Average pressure in September
Chalkyitsik, AK
- Average pressure in September: 29.79"Hg
The month with the highest atmospheric pressure is February (30.03"Hg).
The month with the lowest atmospheric pressure is September (29.79"Hg).
Average wind speed in September
Chalkyitsik, AK
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is June (6.5mph).
The calmest months (with the lowest average wind speed) are January, February and December (4.3mph).
Average humidity in September
Chalkyitsik, AK
- Average humidity in September: 72%
The months with the highest relative humidity are January, February and March (96%).
The month with the lowest relative humidity is June (44%).
Average rainfall in September
Chalkyitsik, AK
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is August (1.18").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in September
Chalkyitsik, AK
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is August (11.7 days).
The month with the least rainy days is February (0.6 days).
Average snowfall in September
Chalkyitsik, AK
- Average snowfall in September: 0.71"
The month with the highest snowfall is November (3.58").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Chalkyitsik, AK
- Average snowfall days in September: 2.2 days
The month with the highest number of snowfall days is March (14.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Chalkyitsik, AK
- Average daylight in September: 13h and 1min
The month with the longest days is May (Average daylight: 19h and 48min).
The month with the shortest days is June (Average daylight: 2h and 18min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is May (Average sunshine: 10h and 54min).
The month with the least sunshine is June (Average sunshine: 1h and 0min).
Average sunshine days in September
Chalkyitsik, AK
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is June (21.4 days).
The month with the least sunshine days is April (14.7 days).
Average UV index in September
Chalkyitsik, AK
- Average UV index in September: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, September, October, November and December (UV index 1).
Average cloud cover in September
Chalkyitsik, AK
- Average cloud cover in September: 50
The month with the most cloud cover is April (Cloud cover 73).
The month with the least cloud cover is June (Cloud cover 34).
Average visibility in September
Chalkyitsik, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (2mi).
Chalkyitsik, Alaska, USA
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