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 advent of September brings a slight shift in average high-temperature, moving from a fresh 51.8°F (11°C) in August to a chilly 45.5°F (7.5°C). Shishmaref's nighttime average temperature in September drops marginally from the daytime highs, settling at an icy 39.9°F (4.4°C).Humidity
The months with the lowest humidity are June, September and October, with an average relative humidity of 79%.Rainfall
In Shishmaref, Alaska, in September, during 11.6 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, there are 67.8 rainfall days, and 7.24" (184mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 2.3 snowfall days, it receives 0.24" (6mm) of snow. In Shishmaref, during the entire year, snow falls for 75.9 days and aggregates up to 10.91" (277mm) of snow.Daylight
The average length of the day in September is 13h and 4min.On the first day of the month, sunrise is at 7:42 am and sunset at 10:25 pm. On the last day of September, sunrise is at 9:15 am and sunset at 8:32 pm AKDT.
Sunshine
The average sunshine in September is 5.6h.UV index
In Shishmaref, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during September leads to these instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Beware! Reflection from snow can magnify 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 least humid month in Shishmaref?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Shishmaref?
What is the UV index reading in September?
Average temperature in September
Shishmaref, AK
- Average high temperature in September: 45.5°F
The warmest month (with the highest average high temperature) is July (52.7°F).
The month with the lowest average high temperature is January (7.9°F).
- Average low temperature in September: 39.9°F
The month with the highest average low temperature is July (45.7°F).
The coldest month (with the lowest average low temperature) is March (-0.8°F).
Average pressure in September
Shishmaref, AK
- Average pressure in September: 29.77"Hg
The months with the highest atmospheric pressure are March and May (29.95"Hg).
The month with the lowest atmospheric pressure is October (29.74"Hg).
Average wind speed in September
Shishmaref, AK
- Average wind speed in September: 13.1mph
The windiest month (with the highest average wind speed) is November (14.4mph).
The calmest month (with the lowest average wind speed) is May (9mph).
Average humidity in September
Shishmaref, AK
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and March (92%).
The months with the lowest relative humidity are June, September and October (79%).
Average rainfall in September
Shishmaref, AK
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is August (1.06").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in September
Shishmaref, AK
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is August (12.4 days).
The months with the least rainy days are February and December (1.5 days).
Average snowfall in September
Shishmaref, AK
- Average snowfall in September: 0.24"
The month with the highest snowfall is November (1.85").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Shishmaref, AK
- Average snowfall days in September: 2.3 days
The month with the highest number of snowfall days is December (12 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Shishmaref, AK
- Average daylight in September: 13h and 1min
The month with the longest days is July (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 2h and 54min).
- Average sunshine in September: 5h and 4min
The month with the most sunshine is August (Average sunshine: 6h and 48min).
The month with the least sunshine is June (Average sunshine: 0h and 30min).
Average sunshine days in September
Shishmaref, AK
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is June (22.3 days).
The month with the least sunshine days is September (14.3 days).
Average UV index in September
Shishmaref, AK
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are January, February, April, October, November and December (UV index 1).
Average cloud cover in September
Shishmaref, AK
- Average cloud cover in September: 60
The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is June (Cloud cover 45).
Average visibility in September
Shishmaref, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April and December (5mi).
Shishmaref, Alaska, USA
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