Barometric Pressure in The Dalles, United States 
1013 hPa
15.0 ℃
50%
3.0 m/s
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Forecast
Hourly Pressure Trends
Track the barometric pressure in The Dalles hour by hour across the next 6 hourly readings.
The Dalles has varying air pressure due to its location near the Columbia River and surrounding mountains.
Air pressure drops when low-pressure systems move in from the Pacific Ocean.
The city's geography creates a rain shadow effect, blocking moisture-laden air and influencing pressure.
In winter, low pressure brings rain and mild temperatures, while high pressure in summer brings hot and dry conditions.
The Dalles has a dry climate with low humidity year-round, contributing to stable air pressure.
Seasonal changes cause pressure fluctuations, with higher pressure in summer and lower in winter.
The region experiences a mix of high and low-pressure systems, resulting in diverse weather patterns.
High pressure dominates in spring and fall, leading to calm and clear conditions.
The city's air pressure is also affected by its elevation, about 150 feet above sea level.