Barometric Pressure in Stevenson, United States 
1017.4 hPa
20.9 ℃
91%
2.4 m/s
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The average pressure in Stevenson, Alabama, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at times, worse later
The daily total fluctuation in pressure in Stevenson is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Stevenson hour by hour across the next 6 hourly readings.
The barometric pressure in Stevenson, Alabama fluctuates throughout the day. It changes in response to weather systems moving into the area. Pressure drops when low-pressure systems approach, bringing rain and storms. It rises when high-pressure systems dominate, bringing clear skies and fair weather.
Stevenson lies in a valley surrounded by the Appalachian Mountains to the north and the Cumberland Plateau to the south. These mountain ranges block and redirect air masses moving into the region. The valley's shape and surrounding mountains influence the flow of air, affecting the barometric pressure. The city's location in the valley also contributes to its varied weather patterns.
The surrounding mountains force warm, moist air from the Gulf of Mexico to rise, cool, and condense, resulting in precipitation. Cold air from Canada is also forced to rise, leading to additional precipitation. The clash of these air masses creates a volatile atmosphere, leading to rapid changes in the barometric pressure.