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 arrival of September corresponds with a minor reduction in the average high-temperature, down from August's refreshing 57°F (13.9°C) to a fresh 50.5°F (10.3°C). During September, Pedro Bay's nights hold steady with an average temperature of 41.9°F (5.5°C), barely dropping from the daytime highs.Humidity
In Pedro Bay, the average relative humidity in September is 82%.Rainfall
The month with the most rainfall is September, when the rain falls for 17.9 days and typically aggregates up to 3.31" (84mm) 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 0.5 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 83.4 snowfall days, and 44.37" (1127mm) of snow is accumulated.Daylight
In Pedro Bay, the average length of the day in September is 12h and 49min.On the first day of the month, sunrise is at 7:14 am and sunset at 9:17 pm. On the last day of September, sunrise is at 8:21 am and sunset at 7:50 pm AKDT.
Sunshine
The average sunshine in September in Pedro Bay is 5.9h.UV index
In September, the average daily maximum UV index in Pedro Bay is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 2 transforms into these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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?
What is the rainiest month?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Pedro Bay, AK
- Average high temperature in September: 50.5°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 (20.1°F).
- Average low temperature in September: 41.9°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in September
Pedro Bay, AK
- Average pressure in September: 29.72"Hg
The month with the highest atmospheric pressure is July (29.95"Hg).
The month with the lowest atmospheric pressure is December (29.64"Hg).
Average wind speed in September
Pedro Bay, AK
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is December (9.9mph).
The calmest months (with the lowest average wind speed) are June and July (7.3mph).
Average humidity in September
Pedro Bay, AK
- Average humidity in September: 82%
The months with the highest relative humidity are February, March and December (87%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Pedro Bay, AK
- Average rainfall in September: 3.31"
The wettest month (with the highest rainfall) is September (3.31").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Pedro Bay, AK
- Average rainfall days in September: 17.9 days
The month with the highest number of rainy days is August (18.1 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Pedro Bay, AK
- Average snowfall in September: 0.08"
The month with the highest snowfall is December (9.33").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Pedro Bay, AK
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Pedro Bay, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 5h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Pedro Bay, AK
- Average sunshine days in September: 9.7 days
The month with the most sunshine days is May (14.3 days).
The month with the least sunshine days is September (9.7 days).
Average UV index in September
Pedro Bay, 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 November (UV index 1).
Average cloud cover in September
Pedro Bay, AK
- Average cloud cover in September: 55
The month with the most cloud cover is August (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 50).
Average visibility in September
Pedro Bay, AK
- Average visibility in September: 6mi
The months with the highest visibility are January, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are February, March and December (5mi).
Pedro Bay, Alaska, USA
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