September weather forecastFort Richardson, AK
September
Weather in September
September, the first month of the autumn in Fort Richardson, is still a cool month, with an average temperature fluctuating between 52.2°F (11.2°C) and 42.4°F (5.8°C).Temperature
September sees a slight reduction in average high-temperature, with a shift from a refreshing 59.5°F (15.3°C) in August to a fresh 52.2°F (11.2°C). Nighttime temperatures in Fort Richardson consistently average an icy 42.4°F (5.8°C) during September.Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the most rainfall. Rain falls for 17.4 days and accumulates 2.2" (56mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.16" (4mm) of snow. In Fort Richardson, during the entire year, snow falls for 67.9 days and aggregates up to 29.09" (739mm) of snow.Daylight
The average length of the day in September is 12h and 52min.On the first day of the month, sunrise is at 6:52 am and sunset at 9:03 pm. On the last day of September, sunrise is at 8:05 am and sunset at 7:31 pm AKDT.
Sunshine
In Fort Richardson, the average sunshine in September is 7.7h.UV index
In Fort Richardson, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, an average UV index of 2 transforms into the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fort Richardson, AK
- Average high temperature in September: 52.2°F
The warmest month (with the highest average high temperature) is July (62.2°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 42.4°F
The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Fort Richardson, AK
- Average pressure in September: 29.75"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.67"Hg).
Average wind speed in September
Fort Richardson, AK
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is November (5.4mph).
The calmest month (with the lowest average wind speed) is July (4.3mph).
Average humidity in September
Fort Richardson, AK
- Average humidity in September: 78%
The months with the highest relative humidity are February and March (87%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
Fort Richardson, AK
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is September (2.2").
The driest month (with the least rainfall) is May (0.59").
Average rainfall days in September
Fort Richardson, AK
- Average rainfall days in September: 17.4 days
The month with the highest number of rainy days is August (19.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in September
Fort Richardson, AK
- Average snowfall in September: 0.16"
The month with the highest snowfall is December (6.85").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Fort Richardson, AK
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is February (12.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Fort Richardson, AK
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 36min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is May (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in September
Fort Richardson, AK
- Average sunshine days in September: 9.7 days
The month with the most sunshine days is May (16.9 days).
The months with the least sunshine days are August and September (9.7 days).
Average UV index in September
Fort Richardson, 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 December (UV index 1).
Average cloud cover in September
Fort Richardson, AK
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is May (Cloud cover 38).
Average visibility in September
Fort Richardson, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March and April (5mi).
