Barometric Pressure in Bellevue, United States

• Forecast Chart
• Hourly Trends

The pressure in Bellevue, Washington, United States is predicted to slowly drop over the next few hours, with an average pressure of 1016.7 hPa today, which is considered normal.

Weather prediction: Expect more wet and unsettled conditions

The daily total fluctuation in pressure in Bellevue is 1.5 hPa, with a low of 1015.9 hPa and a high of 1017.4 hPa.

Forecast

The barometric pressure in Bellevue, Washington is influenced by its proximity to the Pacific Ocean and the surrounding mountains. This combination of factors creates a unique pressure system. The pressure is affected by the clash of moist air from the ocean and the dry air from the mountains.

Bellevue is situated in the Puget Sound region, surrounded by the Olympic and Cascade Mountains. The Olympic Mountains block the flow of moist air from the Pacific Ocean. This blockage causes the air to rise, cool, and condense, resulting in rainfall. The Cascade Mountains, east of Bellevue, create a rain shadow effect, drying the air that passes over them.

The landscape around Bellevue also creates microclimates within the city. The hills and valleys channel the wind, directing it through certain areas. This can cause localized variations in pressure and temperature. The surrounding bodies of water, including Lake Washington and Puget Sound, also play a role in regulating the pressure.