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
Mentasta Lake's progression into September involves a drop in the average high-temperature, receding from a fresh 54.5°F (12.5°C) in August to a frosty 44.8°F (7.1°C). The average temperature during September nights in Mentasta Lake is registered at a wintry 32.7°F (0.4°C).Humidity
In Mentasta Lake, the average relative humidity in September is 75%.Rainfall
In Mentasta Lake, in September, it is raining for 12.9 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, in Mentasta Lake, there are 131.6 rainfall days, and 13.15" (334mm) 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 2.2 snowfall days, it receives 0.55" (14mm) of snow. Throughout the year, there are 93.8 snowfall days, and 32.72" (831mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 55min.On the first day of September, sunrise is at 6:23 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:05 pm AKDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The months with the lowest UV index are January through April, September through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 2 translates into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in Mentasta Lake 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 many hours of sunshine does Mentasta Lake have in September?
What are the months with the lowest UV index?
What is the UV index intensity in September?
Average temperature in September
Mentasta Lake, AK
- Average high temperature in September: 44.8°F
The warmest month (with the highest average high temperature) is July (59.2°F).
The month with the lowest average high temperature is January (6.3°F).
- Average low temperature in September: 32.7°F
The month with the highest average low temperature is July (43.7°F).
The coldest month (with the lowest average low temperature) is January (-4°F).
Average pressure in September
Mentasta Lake, AK
- Average pressure in September: 29.78"Hg
The month with the highest atmospheric pressure is February (29.96"Hg).
The month with the lowest atmospheric pressure is September (29.78"Hg).
Average wind speed in September
Mentasta Lake, AK
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Mentasta Lake, AK
- Average humidity in September: 75%
The month with the highest relative humidity is March (87%).
The month with the lowest relative humidity is June (65%).
Average rainfall in September
Mentasta Lake, AK
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in September
Mentasta Lake, AK
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is June (19.9 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in September
Mentasta Lake, AK
- Average snowfall in September: 0.55"
The month with the highest snowfall is November (5.94").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Mentasta Lake, AK
- Average snowfall days in September: 2.2 days
The month with the highest number of snowfall days is November (15.8 days).
The months with the least snowfall days are June and July (0 days).
Average daylight in September /
Average sunshine in September
Mentasta Lake, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 20h and 6min).
The month with the shortest days is December (Average daylight: 5h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 13h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Mentasta Lake, AK
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is March (17.9 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in September
Mentasta Lake, AK
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, April, September, October, November and December (UV index 2).
Average cloud cover in September
Mentasta Lake, AK
- Average cloud cover in September: 41
The month with the most cloud cover is April (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in September
Mentasta Lake, AK
- Average visibility in September: 6mi
The months with the highest visibility are January, February, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are March and April (5mi).
Mentasta Lake, Alaska, USA
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