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 arrival of September indicates a decrease in the average high-temperature, moving from a warm 76.8°F (24.9°C) in August to an enjoyable 66°F (18.9°C). Blueslide logs a notable disparity from the daily highs during September, as the nighttime temperature lowers to an average of 39.4°F (4.1°C).Humidity
The average relative humidity in September is 65%.Rainfall
In Blueslide, in September, it is raining for 11.1 days, with typically 1.06" (27mm) of accumulated precipitation. Throughout the year, there are 147.3 rainfall days, and 20.12" (511mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Blueslide. Throughout September, in the average 0.2 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, there are 95.8 snowfall days, and 50.39" (1280mm) of snow is accumulated.Daylight
In September, the average length of the day in Blueslide, Washington, is 12h and 34min.On the first day of September, sunrise is at 6:07 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:29 pm PDT.
Sunshine
In Blueslide, the average sunshine in September is 9.9h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What is the temperature in September in Blueslide?
What is the average humidity in September in Blueslide?
How much does it rain in Blueslide in September?
When does it start to snow in Blueslide?
What is the average length of the day in September in Blueslide?
What time are sunrise and sunset in September in Blueslide?
How many hours of sunshine does Blueslide have in September?
How high is the UV index in September in Blueslide?
Average temperature in September
Blueslide, WA
- Average high temperature in September: 66°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.6°F).
- Average low temperature in September: 39.4°F
The month with the highest average low temperature is August (46.6°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in September
Blueslide, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Blueslide, WA
- Average wind speed in September: 3.5mph
The windiest months (with the highest average wind speed) are April, May and June (3.9mph).
The calmest months (with the lowest average wind speed) are January and December (3.2mph).
Average humidity in September
Blueslide, WA
- Average humidity in September: 65%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Blueslide, WA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is August (0.59").
Average rainfall days in September
Blueslide, WA
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is April (18.5 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in September
Blueslide, WA
- Average snowfall in September: 0.51"
The month with the highest snowfall is January (11.77").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Blueslide, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (20.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Blueslide, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Blueslide, WA
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is August (20.2 days).
The month with the least sunshine days is March (7.6 days).
Average UV index in September
Blueslide, WA
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Blueslide, WA
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Blueslide, WA
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Blueslide, Washington, USA
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