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 onset of September brings an average high-temperature of a chilly 44.8°F (7.1°C), nearly matching the August temperature. Wales's nighttime temperature in September consistently rests at an icy 41°F (5°C).Humidity
In Wales, the average relative humidity in September is 81%.Rainfall
In Wales, during September, the rain falls for 12.5 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 86.5 rainfall days, and 14.25" (362mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 2.7 snowfall days, it receives 0.28" (7mm) of snow. Throughout the year, there are 90 snowfall days, and 20.51" (521mm) of snow is accumulated.Daylight
In Wales, the average length of the day in September is 13h and 2min.On the first day of the month, sunrise is at 7:52 am and sunset at 10:31 pm. On the last day of September, sunrise is at 9:22 am and sunset at 8:41 pm AKDT.
Sunshine
In September, the average sunshine is 4.9h.UV index
In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, the UV index of 2 transforms into the following advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take note! UV radiation from the Sun can double in intensity 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?
How much does it rain in September?
When does it start to snow in Wales?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Wales have in September?
What is the UV index reading in September?
Average temperature in September
Wales, AK
- Average high temperature in September: 44.8°F
The warmest month (with the highest average high temperature) is August (50°F).
The month with the lowest average high temperature is January (9°F).
- Average low temperature in September: 41°F
The month with the highest average low temperature is August (45.3°F).
The coldest months (with the lowest average low temperature) are February and March (1.8°F).
Average pressure in September
Wales, AK
- Average pressure in September: 29.77"Hg
The month with the highest atmospheric pressure is May (29.96"Hg).
The month with the lowest atmospheric pressure is October (29.72"Hg).
Average wind speed in September
Wales, AK
- Average wind speed in September: 14.9mph
The windiest month (with the highest average wind speed) is December (17.5mph).
The calmest month (with the lowest average wind speed) is May (12mph).
Average humidity in September
Wales, AK
- Average humidity in September: 81%
The month with the highest relative humidity is March (93%).
The months with the lowest relative humidity are October and November (79%).
Average rainfall in September
Wales, AK
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Wales, AK
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (1.3 days).
Average snowfall in September
Wales, AK
- Average snowfall in September: 0.28"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Wales, AK
- Average snowfall days in September: 2.7 days
The month with the highest number of snowfall days is April (13 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Wales, AK
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 22h and 36min).
The month with the shortest days is December (Average daylight: 3h and 30min).
- Average sunshine in September: 4h and 5min
The month with the most sunshine is August (Average sunshine: 5h and 42min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in September
Wales, AK
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is June (18.4 days).
The month with the least sunshine days is October (11.1 days).
Average UV index in September
Wales, AK
- Average UV index in September: 2
The month with the highest UV index is July (UV index 3).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Wales, AK
- Average cloud cover in September: 65
The month with the most cloud cover is February (Cloud cover 78).
The month with the least cloud cover is June (Cloud cover 52).
Average visibility in September
Wales, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, November and December (5mi).
Wales, Alaska, USA
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