September weather forecastSkagway, AK
September
Weather in September
September in Skagway marks the onset of fall, with the temperatures beginning to decrease noticeably. Snowfall makes a reappearance after a gap of several months, though only sparingly at 0in. Meanwhile, the rainfall remains high, signaling the gradual transition from summer to fall. The shorter days and reduced sunlight hours hint at the beginning of the cooler months. Yet, the autumn colors and reasonable temperatures make September a beautiful month to visit Skagway, despite the frequent rain showers.Temperature
September is characterized by a slight reduction in average high-temperature, easing from a cool 51.4°F (10.8°C) in August to a frosty 43.9°F (6.6°C). Skagway observes a slightly reduced average nighttime temperature of 35.2°F (1.8°C) during September.Humidity
In September, the average relative humidity is 86%.Rainfall
In Skagway, in September, it is raining for 18.8 days, with typically 3.11" (79mm) of accumulated precipitation. In Skagway, during the entire year, the rain falls for 172.5 days and collects up to 33.66" (855mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 49min.On the first day of the month, sunrise is at 5:59 am and sunset at 8:01 pm. On the last day of September, in Skagway, sunrise is at 7:06 am and sunset at 6:35 pm AKDT.
Sunshine
In September, the average sunshine is 6.1h.UV index
The months with the lowest UV index are January, February, April, September through December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 1 during September leads to these instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Skagway, AK
- Average high temperature in September: 43.9°F
The warmest month (with the highest average high temperature) is July (54.9°F).
The month with the lowest average high temperature is December (17.8°F).
- Average low temperature in September: 35.2°F
The month with the highest average low temperature is July (42.6°F).
The coldest month (with the lowest average low temperature) is February (7°F).
Average pressure in September
Skagway, AK
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is July (30"Hg).
The month with the lowest atmospheric pressure is November (29.83"Hg).
Average wind speed in September
Skagway, AK
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest months (with the lowest average wind speed) are April and May (5.5mph).
Average humidity in September
Skagway, AK
- Average humidity in September: 86%
The month with the highest relative humidity is January (94%).
The months with the lowest relative humidity are June and July (80%).
Average rainfall in September
Skagway, AK
- Average rainfall in September: 3.11"
The wettest month (with the highest rainfall) is January (4.13").
The driest month (with the least rainfall) is May (1.54").
Average rainfall days in September
Skagway, AK
- Average rainfall days in September: 18.8 days
The month with the highest number of rainy days is August (19.6 days).
The month with the least rainy days is February (7.2 days).
Average snowfall in September
Skagway, AK
- Average snowfall in September: 0"
The month with the highest snowfall is January (19.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Skagway, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Skagway, AK
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 6h and 6min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).
Average sunshine days in September
Skagway, AK
- Average sunshine days in September: 9.2 days
The month with the most sunshine days is March (12.3 days).
The month with the least sunshine days is June (8 days).
Average UV index in September
Skagway, AK
- Average UV index in September: 1
The month with the highest UV index is July (UV index 3).
The months with the lowest UV index are January, February, April, September, October, November and December (UV index 1).
Average cloud cover in September
Skagway, AK
- Average cloud cover in September: 63
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is May (Cloud cover 51).
Average visibility in September
Skagway, AK
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
