September weather forecastEaston, WA
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Easton, Washington, with temperature in the range of an average low of 41°F (5°C) and an average high of 62.6°F (17°C).Temperature
September's onset corresponds with a shift in the average high-temperature, moving from a pleasant 72.3°F (22.4°C) in August to a comfortable 62.6°F (17°C). Easton experiences a drastic reduction from day temperatures to an average low of 41°F (5°C) in September.Humidity
In Easton, the average relative humidity in September is 74%.Rainfall
In Easton, in September, during 13.4 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, there are 174.5 rainfall days, and 46.38" (1178mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Easton, during the entire year, snow falls for 90.4 days and aggregates up to 104.96" (2666mm) of snow.Daylight
In Easton, Washington, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:43 pm. On the last day of September, in Easton, sunrise is at 7:03 am and sunset at 6:45 pm PDT.
Sunshine
In September, the average sunshine is 9h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 2 in September transforms into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Easton, WA
- Average high temperature in September: 62.6°F
The warmest month (with the highest average high temperature) is August (72.3°F).
The month with the lowest average high temperature is December (29.8°F).
- Average low temperature in September: 41°F
The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).
Average pressure in September
Easton, WA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Easton, WA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is June (5.2mph).
The calmest months (with the lowest average wind speed) are September and October (4.2mph).
Average humidity in September
Easton, WA
- Average humidity in September: 74%
The month with the highest relative humidity is February (94%).
The months with the lowest relative humidity are July and August (68%).
Average rainfall in September
Easton, WA
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is January (7.24").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in September
Easton, WA
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is April (18.8 days).
The month with the least rainy days is August (8.3 days).
Average snowfall in September
Easton, WA
- Average snowfall in September: 0.04"
The month with the highest snowfall is December (25.16").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Easton, WA
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (18.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Easton, WA
- Average daylight in September: 12h and 30min
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 36min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Easton, WA
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is August (19.3 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in September
Easton, WA
- Average UV index in September: 2
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 1).
Average cloud cover in September
Easton, WA
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Easton, WA
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July, August and September (5mi).
The months with the lowest visibility are January, February and December (3mi).
