Barometric Pressure in Salem, United States 
1013 hPa
15.0 ℃
50%
3.0 m/s
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Forecast
Hourly Pressure Trends
Track the barometric pressure in Salem hour by hour across the next 6 hourly readings.
Barometric pressure in Salem, Oregon varies constantly. It can be high, causing clear skies and fair weather. At other times, it can be low, resulting in cloudy skies and precipitation.
Salem is situated in the Willamette Valley. The surrounding mountains, including the Oregon Coast Range and the Cascade Range, influence the atmospheric pressure. The mountains create a rain shadow effect, resulting in drier air from the east. Moist air from the Pacific Ocean also affects the pressure.
The valley's flat terrain allows winds to move freely, further altering the pressure. The combination of these geographical features creates a unique weather pattern in Salem.