Barometric Pressure in Portland, United States 
0000 hPa
00.0 ℃
00.0 m/s
00.0%
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The pressure in Portland, Oregon, United States is predicted to rapidly rise over the next few hours, with an average pressure of 1013.2 hPa today, which is considered normal.
Weather prediction: Expect shortly fair weather and gale or storm winds
The daily total fluctuation in pressure in Portland is 8.5 hPa, with a low of 1008.2 hPa and a high of 1016.7 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Portland hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Portland, Oregon is generally mild. It averages around 30.15 inches of mercury. This is slightly above the national average.
Portland is situated near the confluence of the Willamette and Columbia rivers. The city is surrounded by mountains to the east and west. The Pacific Ocean lies to the west.
The surrounding mountains and ocean have an impact on the atmospheric pressure. The mountains block some weather patterns from reaching the city. The ocean helps regulate temperature and humidity.
During the winter, a high-pressure system often sits over the Pacific Ocean. This brings dry air from the east, lowering the barometric pressure. In the summer, a low-pressure system develops over the land. This pulls moist air from the ocean, increasing the barometric pressure.