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 transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from an agreeable 71.1°F (21.7°C) in August to a refreshing 65.3°F (18.5°C). In Clipper, the nighttime temperature averages to a frosty 49.5°F (9.7°C) during September.Humidity
In September, the average relative humidity in Clipper is 79%.Rainfall
In Clipper, in September, during 5.8 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. In Clipper, Washington, during the entire year, the rain falls for 104.5 days and collects up to 7.01" (178mm) of precipitation.Snowfall
May through October are months without snowfall in Clipper.Daylight
In Clipper, Washington, the average length of the day in September is 12h and 34min.On the first day of September in Clipper, sunrise is at 6:27 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:48 pm PDT.
Sunshine
In Clipper, the average sunshine in September is 9.2h.UV index
In Clipper, Washington, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Around midday, solar radiation is most harmful; hence, exposure should be limited. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What are the temperatures in Clipper in September?
What is the average humidity in September in Clipper?
How many days does it rain in September in Clipper?
When it does not snow in Clipper?
How many hours of daylight does Clipper have in September?
When is the sunrise / sunset in September in Clipper?
How long on average sun shines in September in Clipper?
How high is the UV index in September in Clipper?
Average temperature in September
Clipper, WA
- Average high temperature in September: 65.3°F
The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is December (41.7°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is August (52.7°F).
The coldest months (with the lowest average low temperature) are February and December (34.3°F).
Average pressure in September
Clipper, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Clipper, WA
- Average wind speed in September: 3.8mph
The windiest months (with the highest average wind speed) are November and December (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in September
Clipper, WA
- Average humidity in September: 79%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (74%).
Average rainfall in September
Clipper, WA
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is January (1.1").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in September
Clipper, WA
- Average rainfall days in September: 5.8 days
The month with the highest number of rainy days is November (13.6 days).
The month with the least rainy days is August (3.1 days).
Average snowfall in September
Clipper, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Clipper, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 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
Clipper, 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 18min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in September
Clipper, WA
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is November (11.3 days).
Average UV index in September
Clipper, WA
- Average UV index in September: 3
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
Clipper, WA
- Average cloud cover in September: 34
The months with the most cloud cover are January, February, March and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in September
Clipper, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
Clipper, Washington, USA
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