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
September ushers in a slight temperature change, with average high-temperatures reducing from August's 84.7°F (29.3°C) to a still warm 73.9°F (23.3°C). Throughout September, the nighttime temperature averages to a cool 54.9°F (12.7°C).Humidity
The average relative humidity in September is 48%.Rainfall
In Bickleton, in September, during 5.5 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. In Bickleton, during the entire year, the rain falls for 107.9 days and collects up to 8.46" (215mm) of precipitation.Snowfall
In Bickleton, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:38 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:42 pm PDT.
Sunshine
The average sunshine in September is 10.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Bickleton, WA
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).
Average pressure in September
Bickleton, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in September
Bickleton, WA
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is June (9.2mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in September
Bickleton, WA
- Average humidity in September: 48%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in September
Bickleton, WA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is January (1.1").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Bickleton, WA
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (4.4 days).
Average snowfall in September
Bickleton, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Bickleton, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (4.8 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
Bickleton, 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: 10h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Bickleton, WA
- Average sunshine days in September: 22.1 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (14 days).
Average UV index in September
Bickleton, WA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Bickleton, WA
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Bickleton, 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).
Bickleton, Washington, USA
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