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 signifies a gentle decline in Kirkland's average high-temperature, easing from a warm 75.9°F (24.4°C) in August to a pleasant 69.3°F (20.7°C). During September, Kirkland experiences a consistent low-temperature average of 50.2°F (10.1°C).Humidity
In September, the average relative humidity is 75%.Rainfall
In Kirkland, Washington, in September, it is raining for 10.9 days, with typically 1.3" (33mm) of accumulated precipitation. In Kirkland, during the entire year, the rain falls for 175.1 days and collects up to 28.58" (726mm) of precipitation.Snowfall
In Kirkland, snow does not fall in May through October.Daylight
In September, the average length of the day in Kirkland is 12h and 33min.On the first day of September, sunrise is at 6:28 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:49 pm PDT.
Sunshine
In September, the average sunshine in Kirkland, Washington, is 9.4h.UV index
In Kirkland, 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 rays for ordinary individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What are September temperatures in Kirkland?
What is the average humidity in September in Kirkland?
How much does it rain in Kirkland in September?
When it does not snow in Kirkland?
What is the average length of the day in September in Kirkland?
When are sunrise and sunset in September in Kirkland?
How long on average sun shines in September in Kirkland?
How high is the UV index in September in Kirkland?
Average temperature in September
Kirkland, WA
- Average high temperature in September: 69.3°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in September
Kirkland, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in September
Kirkland, WA
- Average wind speed in September: 3.8mph
The windiest months (with the highest average wind speed) are January and March (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in September
Kirkland, 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 (70%).
Average rainfall in September
Kirkland, WA
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Kirkland, WA
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in September
Kirkland, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.95").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Kirkland, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.9 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
Kirkland, 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 months with the least sunshine are January and December (Average sunshine: 4h and 24min).
Average sunshine days in September
Kirkland, WA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in September
Kirkland, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Kirkland, WA
- Average cloud cover in September: 33
The months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Kirkland, 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).
Kirkland, Washington, USA
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