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 shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a comfortable 61.3°F (16.3°C) to a fresh 52.7°F (11.5°C). Trapper Creek in September experiences a low-temperature average of 39.4°F (4.1°C).Humidity
In September, the average relative humidity is 76%.Rainfall
September is the month with the most rainfall. Rain falls for 17 days and accumulates 2.68" (68mm) 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 0.31" (8mm) of snow. In Trapper Creek, during the entire year, snow falls for 60.9 days and aggregates up to 36.89" (937mm) of snow.Daylight
In Trapper Creek, the average length of the day in September is 12h and 54min.On the first day of September, sunrise is at 6:52 am and sunset at 9:09 pm. On the last day of the month, sunrise is at 8:08 am and sunset at 7:32 pm AKDT.
Sunshine
In Trapper Creek, the average sunshine in September is 7.5h.UV index
The average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 2 suggests these recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
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?
What time are sunrise and sunset in September?
How many hours of sunshine does Trapper Creek have in September?
How high is the UV index in September?
Average temperature in September
Trapper Creek, AK
- Average high temperature in September: 52.7°F
The warmest month (with the highest average high temperature) is July (65.5°F).
The month with the lowest average high temperature is January (16.9°F).
- Average low temperature in September: 39.4°F
The month with the highest average low temperature is July (48.4°F).
The coldest month (with the lowest average low temperature) is January (8.8°F).
Average pressure in September
Trapper Creek, AK
- Average pressure in September: 29.75"Hg
The month with the highest atmospheric pressure is July (29.94"Hg).
The month with the lowest atmospheric pressure is December (29.72"Hg).
Average wind speed in September
Trapper Creek, AK
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is January (7mph).
The calmest month (with the lowest average wind speed) is July (4.3mph).
Average humidity in September
Trapper Creek, AK
- Average humidity in September: 76%
The month with the highest relative humidity is March (85%).
The month with the lowest relative humidity is May (64%).
Average rainfall in September
Trapper Creek, AK
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is September (2.68").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Trapper Creek, AK
- Average rainfall days in September: 17 days
The month with the highest number of rainy days is August (20.4 days).
The month with the least rainy days is December (4.8 days).
Average snowfall in September
Trapper Creek, AK
- Average snowfall in September: 0.31"
The month with the highest snowfall is November (7.87").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Trapper Creek, AK
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Trapper Creek, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 42min).
The month with the shortest days is December (Average daylight: 5h and 12min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is May (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in September
Trapper Creek, AK
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is January (19.5 days).
The month with the least sunshine days is August (8.3 days).
Average UV index in September
Trapper Creek, 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
Trapper Creek, AK
- Average cloud cover in September: 45
The month with the most cloud cover is August (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 38).
Average visibility in September
Trapper Creek, AK
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is April (5mi).
Trapper Creek, Alaska, USA
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