Barometric Pressure in Trussville, United States 
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The pressure in Trussville, Alabama, United States is predicted to slowly drop over the next few hours, with an average pressure of 996.7 hPa today, which is lower than normal.
Weather prediction: Expect more wet and unsettled conditions
The daily total fluctuation in pressure in Trussville is 4 hPa, with a low of 994.3 hPa and a high of 998.3 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Trussville hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Trussville, Alabama varies throughout the day and night. It changes depending on the weather system that is present. High pressure systems bring clear skies and fair weather. Low pressure systems bring clouds and precipitation.
Trussville is located in a valley surrounded by mountains to the north and east. This unique landscape affects the atmospheric pressure. The mountains block and redirect air masses that move into the region. As a result, the pressure gradient is altered.
The city's proximity to the Appalachian Mountains also plays a role. The mountains force warm, moist air from the Gulf of Mexico to rise, cool, and condense. This process creates clouds and precipitation, which in turn affects the barometric pressure.
The local topography also influences the pressure patterns. The surrounding hills and valleys channel the wind and air masses, leading to variations in pressure. These variations can bring different types of weather to the area.