Barometric Pressure in Bethesda, United States 
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The pressure in Bethesda, Maryland, United States is predicted to slowly drop over the next few hours, with an average pressure of 985.3 hPa today, which is lower than normal.
Weather prediction: Expect more wet and unsettled conditions
The daily total fluctuation in pressure in Bethesda is 7.9 hPa, with a low of 981.9 hPa and a high of 989.8 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Bethesda hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Bethesda fluctuates throughout the year. It is affected by the city's proximity to the Atlantic Ocean and the Appalachian Mountains. Changes in pressure bring different weather patterns. High pressure usually indicates fair weather, while low pressure signals stormy conditions.
Bethesda is situated in a valley near the Fall Line. This transition zone between the coastal plain and the Piedmont plateau creates a unique landscape. The surrounding hills and valleys influence the flow of air masses and the movement of weather systems.
The city's location east of the Appalachian Mountains also plays a role in shaping its weather. Moist air from the Atlantic Ocean rises over the mountains, cools, and condenses, resulting in precipitation. This orographic effect contributes to the region's humid subtropical climate.