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
In Skwentna, entering September brings a temperature decrement, reducing from August's comfortable 62.2°F (16.8°C) to a fresh 53.2°F (11.8°C). In Skwentna, an average low-temperature of 39.7°F (4.3°C) is recorded during September nights.Humidity
The average relative humidity in September is 78%.Rainfall
In September, the rain falls for 16.3 days. Throughout September, 3.19" (81mm) of precipitation is accumulated. In Skwentna, Alaska, during the entire year, the rain falls for 120.5 days and collects up to 22.56" (573mm) 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 0.2 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 74.8 snowfall days, and 63.98" (1625mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 53min.On the first day of the month, sunrise is at 6:57 am and sunset at 9:11 pm. On the last day of September, sunrise is at 8:11 am and sunset at 7:37 pm AKDT.
Sunshine
In September, the average sunshine is 5.9h.UV index
In Skwentna, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in September interprets into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September in Skwentna?
How high is the UV index in September?
Average temperature in September
Skwentna, AK
- Average high temperature in September: 53.2°F
The warmest month (with the highest average high temperature) is July (67.1°F).
The month with the lowest average high temperature is January (15.4°F).
- Average low temperature in September: 39.7°F
The month with the highest average low temperature is July (48.9°F).
The coldest month (with the lowest average low temperature) is January (6.6°F).
Average pressure in September
Skwentna, AK
- Average pressure in September: 29.75"Hg
The month with the highest atmospheric pressure is July (29.95"Hg).
The month with the lowest atmospheric pressure is December (29.7"Hg).
Average wind speed in September
Skwentna, AK
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is January (5.6mph).
The calmest month (with the lowest average wind speed) is July (4.4mph).
Average humidity in September
Skwentna, AK
- Average humidity in September: 78%
The months with the highest relative humidity are February, March and December (85%).
The month with the lowest relative humidity is May (62%).
Average rainfall in September
Skwentna, AK
- Average rainfall in September: 3.19"
The wettest month (with the highest rainfall) is October (3.66").
The driest month (with the least rainfall) is June (0.79").
Average rainfall days in September
Skwentna, AK
- Average rainfall days in September: 16.3 days
The month with the highest number of rainy days is September (16.3 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in September
Skwentna, AK
- Average snowfall in September: 0.12"
The month with the highest snowfall is December (16.69").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Skwentna, AK
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Skwentna, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 30min).
The month with the shortest days is December (Average daylight: 5h and 24min).
- Average sunshine in September: 5h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Skwentna, AK
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is September (12.3 days).
Average UV index in September
Skwentna, AK
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Skwentna, AK
- Average cloud cover in September: 55
The months with the most cloud cover are August and December (Cloud cover 56).
The months with the least cloud cover are May and June (Cloud cover 45).
Average visibility in September
Skwentna, AK
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July, October and November (6mi).
The month with the lowest visibility is April (4mi).
Skwentna, Alaska, USA
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