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 shift from August to September involves a decrease in the average high-temperature, dropping from a mild 60.3°F (15.7°C) to a chilly 47.5°F (8.6°C). Bettles records a mean low-temperature of 33.1°F (0.6°C) in September.Humidity
In Bettles, the average relative humidity in September is 75%.Rainfall
In Bettles, during September, the rain falls for 11.3 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 76.6 rainfall days, and 9.72" (247mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 3.8 snowfall days, it receives 1.06" (27mm) of snow. Throughout the year, there are 88.7 snowfall days, and 35.59" (904mm) of snow is accumulated.Daylight
In September, the average length of the day is 13h and 6min.On the first day of the month, sunrise is at 6:41 am and sunset at 9:30 pm. On the last day of September, sunrise is at 8:17 am and sunset at 7:33 pm AKDT.
Sunshine
In Bettles, the average sunshine in September is 6.7h.UV index
The months with the lowest UV index are January, March, April, September, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 1 in September translates into these instructions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September in Bettles?
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 in Bettles?
How long on average sun shines in September?
When is the lowest UV index?
How high is the UV index in September?
Average temperature in September
Bettles, AK
- Average high temperature in September: 47.5°F
The warmest month (with the highest average high temperature) is July (68.2°F).
The month with the lowest average high temperature is January (-2.7°F).
- Average low temperature in September: 33.1°F
The month with the highest average low temperature is July (49.3°F).
The coldest month (with the lowest average low temperature) is January (-13.5°F).
Average pressure in September
Bettles, AK
- Average pressure in September: 29.8"Hg
The months with the highest atmospheric pressure are January and February (30.01"Hg).
The month with the lowest atmospheric pressure is September (29.8"Hg).
Average wind speed in September
Bettles, AK
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are June and July (5.1mph).
The calmest month (with the lowest average wind speed) is February (4.1mph).
Average humidity in September
Bettles, AK
- Average humidity in September: 75%
The month with the highest relative humidity is April (93%).
The month with the lowest relative humidity is June (52%).
Average rainfall in September
Bettles, AK
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is August (1.5").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Bettles, AK
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is January (1.3 days).
Average snowfall in September
Bettles, AK
- Average snowfall in September: 1.06"
The month with the highest snowfall is December (6.54").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Bettles, AK
- Average snowfall days in September: 3.8 days
The month with the highest number of snowfall days is December (13.4 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Bettles, AK
- Average daylight in September: 13h and 1min
The month with the longest days is May (Average daylight: 20h and 0min).
The month with the shortest days is June (Average daylight: 0h and 48min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in September
Bettles, AK
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is August (14.2 days).
Average UV index in September
Bettles, AK
- Average UV index in September: 1
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, March, April, September, November and December (UV index 1).
Average cloud cover in September
Bettles, AK
- Average cloud cover in September: 52
The month with the most cloud cover is April (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 36).
Average visibility in September
Bettles, AK
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August and September (6mi).
The month with the lowest visibility is April (3mi).
Bettles, Alaska, USA
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