September weather forecastShaw Island, WA
September
Weather in September
September, the first month of the autumn in Shaw Island, is also an enjoyable month, with an average temperature ranging between min 55.6°F (13.1°C) and max 61.3°F (16.3°C).Temperature
With the advent of September, Shaw Island experiences an average high-temperature of a still enjoyable 61.3°F (16.3°C), mirroring a close resemblance to the previous month. The month of September in Shaw Island shows a minor drop from daytime temperatures, generally recording a low average of 55.6°F (13.1°C).Humidity
The months with the highest humidity in Shaw Island are January, August and September, with an average relative humidity of 79%.Rainfall
In Shaw Island, in September, it is raining for 11.6 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, in Shaw Island, there are 167.7 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
In Shaw Island, snow does not fall in April through October.Daylight
In Shaw Island, the average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:30 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine in Shaw Island, Washington, is 9.4h.UV index
In Shaw Island, 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 ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shaw Island, WA
- Average high temperature in September: 61.3°F
The warmest month (with the highest average high temperature) is July (64.9°F).
The months with the lowest average high temperature are January, February and December (45.3°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).
Average pressure in September
Shaw Island, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Shaw Island, WA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is November (10.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Shaw Island, WA
- Average humidity in September: 79%
The months with the highest relative humidity are January, August and September (79%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Shaw Island, WA
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is November (3.43").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Shaw Island, WA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in September
Shaw Island, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Shaw Island, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 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
Shaw Island, WA
- Average daylight in September: 12h and 36min
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 24min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in September
Shaw Island, WA
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is August (24.7 days).
The month with the least sunshine days is November (8.7 days).
Average UV index in September
Shaw Island, 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
Shaw Island, WA
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in September
Shaw Island, WA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
