Barometric Pressure in Bethesda, United States 
1017.9 hPa
22.3 ℃
48%
5.16 m/s
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The average pressure in Bethesda, Maryland, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at times, worse later
Rapid Pressure Changes
Rapid pressure changes detected in Bethesda, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
- Rapid Fall : ()
The daily total fluctuation in pressure in Bethesda is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Bethesda hour by hour across the next 6 hourly readings.
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.