Barometric Pressure in Seattle, United States 
0000 hPa
00.0 ℃
00.0 m/s
00.0%
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The pressure in Seattle, Washington, United States is predicted to drop over the next few hours, with an average pressure of 1004.9 hPa today, which is lower than normal.
Weather prediction: Expect wet, unsettled weather and a strong breeze
The daily total fluctuation in pressure in Seattle is 2.3 hPa, with a low of 1003.3 hPa and a high of 1005.6 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Seattle hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Seattle is affected by its proximity to the Pacific Ocean and the surrounding mountains. This combination leads to frequent changes in pressure. Low-pressure systems from the Pacific dominate the winter weather, bringing cloudy and rainy conditions. High-pressure systems from the north and east bring fair weather during the summer.
Seattle is surrounded by the Olympic Mountains to the west and the Cascade Range to the east. The Puget Sound, a body of water, lies between the city and the Olympic Mountains. This unique landscape channels airflow and influences the barometric pressure. The mountains force air to rise, cool, and condense, resulting in rain.