September weather forecastLake Shore, WA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Lake Shore, Washington, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 50.5°F (10.3°C).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a warm 80.2°F (26.8°C) to a pleasant 72.5°F (22.5°C). A sharp contrast between day and night is prevalent in September with an average nighttime temperature of 50.5°F (10.3°C) in Lake Shore.Humidity
In September, the average relative humidity is 72%.Rainfall
In September, in Lake Shore, Washington, the rain falls for 11.5 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. In Lake Shore, Washington, during the entire year, the rain falls for 179.8 days and collects up to 35.35" (898mm) of precipitation.Snowfall
April through October are months without snowfall in Lake Shore.Daylight
In Lake Shore, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:47 pm. On the last day of September, in Lake Shore, sunrise is at 7:08 am and sunset at 6:52 pm PDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index 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 the average person.Note: In September, the maximum UV index of 4 suggests this advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lake Shore, WA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (43.3°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is August (53.1°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).
Average pressure in September
Lake Shore, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Lake Shore, WA
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is January (5.2mph).
The calmest months (with the lowest average wind speed) are August and September (3.9mph).
Average humidity in September
Lake Shore, WA
- Average humidity in September: 72%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Lake Shore, WA
- Average rainfall in September: 1.81"
The wettest months (with the highest rainfall) are January and December (5.2").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in September
Lake Shore, WA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (5.1 days).
Average snowfall in September
Lake Shore, 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
Lake Shore, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lake Shore, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Lake Shore, WA
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in September
Lake Shore, 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
Lake Shore, WA
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Lake Shore, WA
- Average visibility in September: 6mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
