September weather forecastSeaview, WA
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Seaview, Washington, with an average temperature varying between 62.6°F (17°C) and 55°F (12.8°C).Temperature
Seaview experiences a subtle adjustment in high-temperatures to a still refreshing 62.6°F (17°C) with the onset of September, maintaining near parity with August's 63.9°F (17.7°C). Throughout September, Seaview observes a steady low-temperature average of 55°F (12.8°C), reflecting a minor dip from daytime highs.Humidity
In September, the average relative humidity in Seaview is 83%.Rainfall
In Seaview, Washington, in September, it is raining for 9.9 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, in Seaview, Washington, there are 165.1 rainfall days, and 19.92" (506mm) of precipitation is accumulated.Snowfall
Months with snowfall in Seaview, Washington, are January, February and September. September is the first month it typically snows in Seaview. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Seaview, during the entire year, snow falls for 1.8 days and aggregates up to 0.47" (12mm) of snow.Daylight
The average length of the day in September in Seaview is 12h and 32min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:54 pm. On the last day of September, in Seaview, sunrise is at 7:14 am and sunset at 6:57 pm PDT.
Sunshine
The average sunshine in September is 8.7h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Seaview, WA
- Average high temperature in September: 62.6°F
The warmest month (with the highest average high temperature) is August (63.9°F).
The month with the lowest average high temperature is December (46.8°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (41.5°F).
Average pressure in September
Seaview, WA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in September
Seaview, WA
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in September
Seaview, WA
- Average humidity in September: 83%
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is April (80%).
Average rainfall in September
Seaview, WA
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Seaview, WA
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is November (18.5 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in September
Seaview, WA
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are March, April, May, June, July, August, October, November and December (0").
Average snowfall days in September
Seaview, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Seaview, 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 42min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Seaview, WA
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is November (8.9 days).
Average UV index in September
Seaview, WA
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in September
Seaview, WA
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in September
Seaview, 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).
