Barometric Pressure in Sammamish, United States 
0000 hPa
00.0 ℃
00.0 m/s
00.0%
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The pressure in Sammamish, Washington, United States is predicted to rise over the next few hours, with an average pressure of today, which is considered normal.
Weather prediction: Expect fair, dry, cool weather and a strong breeze
The daily total fluctuation in pressure in Sammamish is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Sammamish hour by hour and stay informed about how it will change over the next 6 hours.
Sammamish has varying air pressure due to its proximity to Puget Sound and surrounding mountains. Air pressure drops during storms rolling in from the sound. The city's geography creates a rain shadow effect, influencing air pressure and weather. In winter, low pressure brings rain, while high pressure in summer brings clear skies. Sammamish has an oceanic climate with moderate pressure changes throughout the year. Pressure changes are more dramatic near the sound than inland areas. Seasonal changes bring fluctuations: spring has rising pressure, and fall has dropping pressure.