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 commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 76.3°F (24.6°C) in August to a pleasant 69.6°F (20.9°C). Yarrow Point experiences a nighttime temperature average of 50.5°F (10.3°C) during September.Humidity
In September, the average relative humidity in Yarrow Point is 75%.Rainfall
In Yarrow Point, in September, during 6 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Yarrow Point, during the entire year, the rain falls for 84.2 days and collects up to 5.2" (132mm) of precipitation.Snowfall
In Yarrow Point, snow does not fall in April through October and December.Daylight
The average length of the day in September in Yarrow Point, Washington, is 12h and 33min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:49 pm PDT.
Sunshine
In September, the average sunshine in Yarrow Point is 9.4h.UV index
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 exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Take necessary precautions - Defending against sun damage is advocated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What are September temperatures in Yarrow Point?
What is the average humidity in September in Yarrow Point?
How much does it rain in Yarrow Point in September?
When it does not snow in Yarrow Point?
How many hours of daylight does Yarrow Point have in September?
When is the sunrise / sunset in September in Yarrow Point?
How many hours of sunshine does Yarrow Point have in September?
What is the UV index intensity in September in Yarrow Point?
Average temperature in September
Yarrow Point, WA
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is August (76.3°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (35.1°F).
Average pressure in September
Yarrow Point, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in September
Yarrow Point, WA
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity in September
Yarrow Point, WA
- Average humidity in September: 75%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Yarrow Point, WA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (0.87").
The driest months (with the least rainfall) are July and August (0.12").
Average rainfall days in September
Yarrow Point, WA
- Average rainfall days in September: 6 days
The month with the highest number of rainy days is November (9.1 days).
The month with the least rainy days is August (2.8 days).
Average snowfall in September
Yarrow Point, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Yarrow Point, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Yarrow Point, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in September
Yarrow Point, WA
- Average sunshine days in September: 21.1 days
The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is November (16.8 days).
Average UV index in September
Yarrow Point, WA
- Average UV index in September: 4
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 2).
Average cloud cover in September
Yarrow Point, WA
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Yarrow Point, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
Yarrow Point, Washington, USA
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