Barometric Pressure in The Dalles, United States

• Forecast Chart
• Hourly Trends

The pressure in The Dalles, Oregon, United States is predicted to rapidly rise over the next few hours, with an average pressure of

999.5

today, which is lower than normal.

Weather prediction: Expect shortly fair weather and gale or storm winds

The daily total fluctuation in pressure in The Dalles is

7.9

, with a low of

995

and a high of

1002.9

.

Forecast

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.