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
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's enjoyable 61.2°F (16.2°C) to a fresh 54.1°F (12.3°C). Koliganek encounters a steady low-temperature average of 41.9°F (5.5°C) throughout the month of September.Humidity
The average relative humidity in September is 79%.Rainfall
In Koliganek, in September, during 15.2 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 142.3 rainfall days, and 25.12" (638mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Koliganek, the average length of the day in September is 12h and 49min.On the first day of the month, sunrise is at 7:27 am and sunset at 9:30 pm. On the last day of September, in Koliganek, sunrise is at 8:34 am and sunset at 8:03 pm AKDT.
Sunshine
The average sunshine in September is 5.4h.UV index
In Koliganek, the average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in September interprets into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. To protect against the Sun's most potent rays, avoid direct exposure around midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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 much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Koliganek have in September?
What is the UV index reading in September?
Average temperature in September
Koliganek, AK
- Average high temperature in September: 54.1°F
The warmest month (with the highest average high temperature) is July (62.4°F).
The month with the lowest average high temperature is January (17.4°F).
- Average low temperature in September: 41.9°F
The month with the highest average low temperature is July (49.1°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in September
Koliganek, AK
- Average pressure in September: 29.72"Hg
The month with the highest atmospheric pressure is July (29.95"Hg).
The month with the lowest atmospheric pressure is December (29.61"Hg).
Average wind speed in September
Koliganek, AK
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is June (7.9mph).
Average humidity in September
Koliganek, AK
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (68%).
Average rainfall in September
Koliganek, AK
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is June (1.42").
Average rainfall days in September
Koliganek, AK
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is August (18.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Koliganek, AK
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.4").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Koliganek, AK
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is March (11.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Koliganek, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is June (Average sunshine: 8h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Koliganek, AK
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is March (16.2 days).
The month with the least sunshine days is August (11.2 days).
Average UV index in September
Koliganek, AK
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Koliganek, AK
- Average cloud cover in September: 57
The month with the most cloud cover is August (Cloud cover 62).
The months with the least cloud cover are June and November (Cloud cover 54).
Average visibility in September
Koliganek, AK
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
Koliganek, Alaska, USA
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