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 coincides with a reduction in the average high-temperature, falling from a moderate 60.4°F (15.8°C) in August to a frosty 48.7°F (9.3°C). Ruby's average low-temperature in the month of September is recorded at a cold 35.6°F (2°C).Humidity
In September, the average relative humidity is 82%.Rainfall
In September, the rain falls for 15 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. In Ruby, during the entire year, the rain falls for 116.7 days and collects up to 14.8" (376mm) 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 2.3 snowfall days, it receives 0.55" (14mm) of snow. Throughout the year, there are 115.2 snowfall days, and 43.07" (1094mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 59min.On the first day of September, sunrise is at 7:05 am and sunset at 9:37 pm. On the last day of the month, sunrise is at 8:31 am and sunset at 7:51 pm AKDT.
Sunshine
In September, the average sunshine is 5.2h.UV index
In Ruby, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 2 during September, leads to the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. When the Sun is at its strongest around midday, find shade and limit exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain 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 long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Ruby, AK
- Average high temperature in September: 48.7°F
The warmest month (with the highest average high temperature) is July (67.3°F).
The month with the lowest average high temperature is January (-0.8°F).
- Average low temperature in September: 35.6°F
The month with the highest average low temperature is July (49.5°F).
The coldest month (with the lowest average low temperature) is January (-10.5°F).
Average pressure in September
Ruby, AK
- Average pressure in September: 29.76"Hg
The month with the highest atmospheric pressure is February (29.93"Hg).
The months with the lowest atmospheric pressure are September and October (29.76"Hg).
Average wind speed in September
Ruby, AK
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is September (5.2mph).
The calmest month (with the lowest average wind speed) is January (4.6mph).
Average humidity in September
Ruby, AK
- Average humidity in September: 82%
The months with the highest relative humidity are January, February and March (96%).
The month with the lowest relative humidity is June (59%).
Average rainfall in September
Ruby, AK
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Ruby, AK
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is August (19 days).
The months with the least rainy days are January and February (2.3 days).
Average snowfall in September
Ruby, AK
- Average snowfall in September: 0.55"
The month with the highest snowfall is December (8.62").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Ruby, AK
- Average snowfall days in September: 2.3 days
The month with the highest number of snowfall days is March (20.3 days).
The months with the least snowfall days are June and July (0 days).
Average daylight in September /
Average sunshine in September
Ruby, AK
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 21h and 24min).
The month with the shortest days is December (Average daylight: 4h and 0min).
- Average sunshine in September: 5h and 1min
The month with the most sunshine is May (Average sunshine: 8h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).
Average sunshine days in September
Ruby, AK
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is January (18 days).
The month with the least sunshine days is April (6.5 days).
Average UV index in September
Ruby, AK
- Average UV index in September: 2
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Ruby, AK
- Average cloud cover in September: 59
The month with the most cloud cover is April (Cloud cover 77).
The month with the least cloud cover is June (Cloud cover 47).
Average visibility in September
Ruby, AK
- Average visibility in September: 5mi
The months with the highest visibility are June and July (6mi).
The months with the lowest visibility are January, February, March, April and December (2mi).
Ruby, Alaska, USA
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