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
As August transitions to September, the average high-temperature falls from a hot 86.2°F (30.1°C) to a moderately hot 75.6°F (24.2°C). Wesley Junction experiences a nighttime temperature average of 54.3°F (12.4°C) during September.Humidity
In September, the average relative humidity is 47%.Rainfall
In Wesley Junction, in September, during 4.9 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, there are 98.5 rainfall days, and 6.97" (177mm) of precipitation is accumulated.Snowfall
January through March, September, November and December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, in Wesley Junction, there are 17.1 snowfall days, and 6.69" (170mm) of snow is accumulated.Daylight
In Wesley Junction, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:39 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:42 pm PDT.
Sunshine
In Wesley Junction, the average sunshine in September is 11.1h.UV index
In Wesley Junction, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Wesley Junction?
What is the average humidity in September in Wesley Junction?
How many days does it rain in September in Wesley Junction?
When does it start snowing in Wesley Junction?
How many hours of daylight does Wesley Junction have in September?
When is the sunrise / sunset in September in Wesley Junction?
How long on average sun shines in September in Wesley Junction?
What is the UV index reading in September in Wesley Junction?
Average temperature in September
Wesley Junction, WA
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Wesley Junction, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in September
Wesley Junction, WA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in September
Wesley Junction, WA
- Average humidity in September: 47%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (38%).
Average rainfall in September
Wesley Junction, WA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is January (1.02").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Wesley Junction, WA
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is July (3.5 days).
Average snowfall in September
Wesley Junction, WA
- Average snowfall in September: 0.16"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in September
Wesley Junction, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Wesley Junction, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 11h and 1min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in September
Wesley Junction, WA
- Average sunshine days in September: 22.4 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (14.6 days).
Average UV index in September
Wesley Junction, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Wesley Junction, WA
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Wesley Junction, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Wesley Junction, Washington, USA
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