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 transition into September is marked with an average high-temperature of a chilly 49.5°F (9.7°C), showing an insignificant shift from August's 53.2°F (11.8°C). Nighttime temperatures in Hooper Bay during September report a consistent average of 45.1°F (7.3°C).Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the most rainfall in Hooper Bay is September, when the rain falls for 20.1 days and typically aggregates up to 2.87" (73mm) of precipitation.Snowfall
Months with snowfall in Hooper Bay are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.04" (1mm) of snow. In Hooper Bay, Alaska, during the entire year, snow falls for 86.8 days and aggregates up to 19.57" (497mm) of snow.Daylight
The average length of the day in September in Hooper Bay is 12h and 52min.On the first day of September, sunrise is at 7:57 am and sunset at 10:10 pm. On the last day of the month, sunrise is at 9:11 am and sunset at 8:36 pm AKDT.
Sunshine
In Hooper Bay, the average sunshine in September is 3.8h.UV index
In Hooper Bay, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a regular UV index of 2 translates into these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Hooper Bay?
What is the average humidity in September?
What is the wettest month?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When are sunrise and sunset in September in Hooper Bay?
How long on average sun shines in September?
What is the UV index reading in September in Hooper Bay?
Average temperature in September
Hooper Bay, AK
- Average high temperature in September: 49.5°F
The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is January (16.2°F).
- Average low temperature in September: 45.1°F
The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Hooper Bay, AK
- Average pressure in September: 29.74"Hg
The months with the highest atmospheric pressure are May and July (29.91"Hg).
The month with the lowest atmospheric pressure is December (29.63"Hg).
Average wind speed in September
Hooper Bay, AK
- Average wind speed in September: 15.8mph
The windiest months (with the highest average wind speed) are October and November (18mph).
The calmest month (with the lowest average wind speed) is May (11.7mph).
Average humidity in September
Hooper Bay, AK
- Average humidity in September: 80%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (78%).
Average rainfall in September
Hooper Bay, AK
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is September (2.87").
The driest month (with the least rainfall) is April (0.94").
Average rainfall days in September
Hooper Bay, AK
- Average rainfall days in September: 20.1 days
The month with the highest number of rainy days is September (20.1 days).
The month with the least rainy days is March (3.7 days).
Average snowfall in September
Hooper Bay, AK
- Average snowfall in September: 0.04"
The months with the highest snowfall are February and December (3.98").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Hooper Bay, AK
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is December (15 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Hooper Bay, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 24min).
The month with the shortest days is December (Average daylight: 5h and 30min).
- Average sunshine in September: 3h and 5min
The month with the most sunshine is May (Average sunshine: 7h and 24min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in September
Hooper Bay, AK
- Average sunshine days in September: 6.5 days
The month with the most sunshine days is May (16.1 days).
The month with the least sunshine days is September (6.5 days).
Average UV index in September
Hooper Bay, AK
- Average UV index in September: 2
The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Hooper Bay, AK
- Average cloud cover in September: 73
The month with the most cloud cover is September (Cloud cover 73).
The months with the least cloud cover are May and June (Cloud cover 58).
Average visibility in September
Hooper Bay, AK
- Average visibility in September: 6mi
The months with the highest visibility are March, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, April, November and December (5mi).
Hooper Bay, Alaska, USA
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