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
A shift in the average high-temperature occurs in September, reducing from a refreshing 64.9°F (18.3°C) in August to a fresh 51.4°F (10.8°C). Throughout the month of September, Circle reports a steady low-temperature average of 35.1°F (1.7°C).Humidity
In September, the average relative humidity in Circle is 74%.Rainfall
In Circle, during September, the rain falls for 10 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Circle, during the entire year, the rain falls for 82.8 days and collects up to 7.17" (182mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Circle. Throughout September, in the average 2.2 snowfall days, it receives 0.67" (17mm) of snow. Throughout the year, in Circle, there are 102.7 snowfall days, and 21.34" (542mm) of snow is accumulated.Daylight
In September, the average length of the day is 13h and 3min.On the first day of September, sunrise is at 6:15 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 7:05 pm AKDT.
Sunshine
In September, the average sunshine is 8h.UV index
In September, the average daily maximum UV index in Circle is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 2 in September translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
What are September temperatures in Circle?
What is the average humidity in September in Circle?
How many days does it rain in September in Circle?
When does it start snowing in Circle?
What is the average length of the day in September in Circle?
When are sunrise and sunset in September in Circle?
How long on average sun shines in September in Circle?
What is the UV index reading in September in Circle?
Average temperature in September
Circle, AK
- Average high temperature in September: 51.4°F
The warmest month (with the highest average high temperature) is July (72.5°F).
The month with the lowest average high temperature is January (-6°F).
- Average low temperature in September: 35.1°F
The month with the highest average low temperature is July (51.6°F).
The coldest month (with the lowest average low temperature) is January (-18.9°F).
Average pressure in September
Circle, AK
- Average pressure in September: 29.78"Hg
The month with the highest atmospheric pressure is February (30.02"Hg).
The month with the lowest atmospheric pressure is September (29.78"Hg).
Average wind speed in September
Circle, AK
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is July (4.9mph).
The calmest months (with the lowest average wind speed) are January and December (2.7mph).
Average humidity in September
Circle, AK
- Average humidity in September: 74%
The months with the highest relative humidity are January, February and March (96%).
The month with the lowest relative humidity is June (49%).
Average rainfall in September
Circle, AK
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is August (1.5").
The driest month (with the least rainfall) is February (0.24").
Average rainfall days in September
Circle, AK
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is August (14.6 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in September
Circle, AK
- Average snowfall in September: 0.67"
The month with the highest snowfall is November (4.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Circle, AK
- Average snowfall days in September: 2.2 days
The month with the highest number of snowfall days is March (18.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Circle, AK
- Average daylight in September: 13h and 0min
The month with the longest days is July (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 3h and 18min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in September
Circle, AK
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is April (8.5 days).
Average UV index in September
Circle, AK
- Average UV index in September: 2
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, October, November and December (UV index 1).
Average cloud cover in September
Circle, AK
- Average cloud cover in September: 46
The month with the most cloud cover is April (Cloud cover 72).
The month with the least cloud cover is June (Cloud cover 33).
Average visibility in September
Circle, 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, March, April and December (2mi).
Circle, Alaska, USA
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