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
September's arrival signals a moderate reduction in the average high-temperature, easing from a chilly 46.9°F (8.3°C) in August to an icy 39.2°F (4°C). Prudhoe Bay's nighttime average temperature in September drops marginally from the daytime highs, settling at a still cold 33.1°F (0.6°C).Humidity
The average relative humidity in September is 84%.Rainfall
In Prudhoe Bay, in September, during 7 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, there are 52.1 rainfall days, and 3.62" (92mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, August through December. In Prudhoe Bay, in September, during 8.5 snowfall days, 0.87" (22mm) of snow is typically accumulated. In Prudhoe Bay, during the entire year, snow falls for 122.8 days and aggregates up to 10.24" (260mm) of snow.Daylight
The average length of the day in September is 13h and 19min.On the first day of September, sunrise is at 6:11 am and sunset at 9:34 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 7:16 pm AKDT.
Sunshine
In Prudhoe Bay, the average sunshine in September is 4.3h.UV index
The months with the lowest UV index are February through April, August through December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 1 during September translates into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in September?
What is the average humidity in September?
How many days does it rain in September?
How much does it snow in September?
How many hours of daylight does Prudhoe Bay have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
When is the lowest UV index?
How high is the UV index in September in Prudhoe Bay?
Average temperature in September
Prudhoe Bay, AK
- Average high temperature in September: 39.2°F
The warmest month (with the highest average high temperature) is July (51.4°F).
The month with the lowest average high temperature is January (-7.1°F).
- Average low temperature in September: 33.1°F
The month with the highest average low temperature is July (40.6°F).
The coldest month (with the lowest average low temperature) is January (-16.6°F).
Average pressure in September
Prudhoe Bay, AK
- Average pressure in September: 29.84"Hg
The month with the highest atmospheric pressure is March (30.07"Hg).
The month with the lowest atmospheric pressure is September (29.84"Hg).
Average wind speed in September
Prudhoe Bay, AK
- Average wind speed in September: 11.2mph
The windiest month (with the highest average wind speed) is October (11.9mph).
The calmest month (with the lowest average wind speed) is May (9.8mph).
Average humidity in September
Prudhoe Bay, AK
- Average humidity in September: 84%
The months with the highest relative humidity are January, February, March and December (93%).
The month with the lowest relative humidity is July (76%).
Average rainfall in September
Prudhoe Bay, AK
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is August (0.83").
The driest months (with the least rainfall) are January, April and December (0.16").
Average rainfall days in September
Prudhoe Bay, AK
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is August (11.8 days).
The month with the least rainy days is February (0.7 days).
Average snowfall in September
Prudhoe Bay, AK
- Average snowfall in September: 0.87"
The month with the highest snowfall is November (1.81").
The month with the least snowfall is July (0").
Average snowfall days in September
Prudhoe Bay, AK
- Average snowfall days in September: 8.5 days
The month with the highest number of snowfall days is November (17.5 days).
The month with the least snowfall days is July (0.2 days).
Average daylight in September /
Average sunshine in September
Prudhoe Bay, AK
- Average daylight in September: 13h and 2min
The month with the longest days is August (Average daylight: 18h and 12min).
The months with the shortest days are June and December (Average daylight: 0h and 0min).
- Average sunshine in September: 4h and 2min
The month with the most sunshine is August (Average sunshine: 6h and 36min).
The month with the least sunshine is December (Average sunshine: 0h and 24min).
Average sunshine days in September
Prudhoe Bay, AK
- Average sunshine days in September: 14 days
The month with the most sunshine days is June (21 days).
The month with the least sunshine days is September (14 days).
Average UV index in September
Prudhoe Bay, AK
- Average UV index in September: 1
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are February, March, April, August, September, October, November and December (UV index 1).
Average cloud cover in September
Prudhoe Bay, AK
- Average cloud cover in September: 71
The months with the most cloud cover are November and December (Cloud cover 76).
The month with the least cloud cover is June (Cloud cover 45).
Average visibility in September
Prudhoe Bay, AK
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, March and December (4mi).
Prudhoe Bay, Alaska, USA
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