September weather forecastChignik Lake, AK
September
Weather in September
The first month of the autumn, September, is still a cool month in Chignik Lake, Alaska, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 52.3°F (11.3°C).Temperature
September's onset records a minor alteration in the average high-temperature to a cool 52.3°F (11.3°C) from August's 56.8°F (13.8°C). A consistent average low-temperature of 45.3°F (7.4°C), with a minor variance from the daytime highs, is noted during the nights of September.Humidity
In September, the average relative humidity is 84%.Rainfall
In Chignik Lake, during September, the rain falls for 19.2 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Chignik Lake, during the entire year, the rain falls for 160.7 days and collects up to 16.57" (421mm) 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 0.3 snowfall days, it receives 0.12" (3mm) of snow. In Chignik Lake, during the entire year, snow falls for 83.4 days and aggregates up to 23.94" (608mm) of snow.Daylight
In September, the average length of the day in Chignik Lake is 12h and 43min.On the first day of September, sunrise is at 7:40 am and sunset at 9:28 pm. On the last day of the month, sunrise is at 8:38 am and sunset at 8:11 pm AKDT.
Sunshine
In Chignik Lake, the average sunshine in September is 4.6h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 3 in September leads to these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. 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
Average temperature in September
Chignik Lake, AK
- Average high temperature in September: 52.3°F
The warmest month (with the highest average high temperature) is August (56.8°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in September: 45.3°F
The month with the highest average low temperature is August (49.1°F).
The coldest months (with the lowest average low temperature) are January and March (23.4°F).
Average pressure in September
Chignik Lake, AK
- Average pressure in September: 29.72"Hg
The month with the highest atmospheric pressure is July (29.97"Hg).
The month with the lowest atmospheric pressure is December (29.54"Hg).
Average wind speed in September
Chignik Lake, AK
- Average wind speed in September: 12.6mph
The windiest month (with the highest average wind speed) is December (14.8mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in September
Chignik Lake, AK
- Average humidity in September: 84%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (78%).
Average rainfall in September
Chignik Lake, AK
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is June (0.83").
Average rainfall days in September
Chignik Lake, AK
- Average rainfall days in September: 19.2 days
The month with the highest number of rainy days is September (19.2 days).
The month with the least rainy days is March (7.6 days).
Average snowfall in September
Chignik Lake, AK
- Average snowfall in September: 0.12"
The month with the highest snowfall is December (5.71").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Chignik Lake, AK
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Chignik Lake, AK
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).
- Average sunshine in September: 4h and 36min
The month with the most sunshine is May (Average sunshine: 7h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in September
Chignik Lake, AK
- Average sunshine days in September: 7.5 days
The month with the most sunshine days is May (13 days).
The month with the least sunshine days is November (6 days).
Average UV index in September
Chignik Lake, AK
- Average UV index in September: 3
The months with the highest UV index are May, June, July, August and September (UV index 3).
The months with the lowest UV index are February, March, November and December (UV index 1).
Average cloud cover in September
Chignik Lake, AK
- Average cloud cover in September: 65
The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is May (Cloud cover 59).
Average visibility in September
Chignik Lake, AK
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
