Barometric Pressure in Potomac, United States 
1028.5 hPa
8.6 ℃
91%
1.72 m/s
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The average pressure in Potomac, Maryland, United States today is , which is higher than normal. Pressure is trending falling.
Weather prediction: Occasional rain, worsening
Rapid Pressure Changes
Rapid pressure changes detected in Potomac, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
The daily total fluctuation in pressure in Potomac is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Potomac hour by hour across the next 6 hourly readings.
Weather patterns in Potomac cause barometric pressure to rise and fall. Changes in pressure bring different weather conditions like rain, sunshine, or storms.
Potomac's high elevation and hilly landscape make atmospheric pressure vary more. The town's position near the Piedmont Plateau also affects pressure changes.
In winter, pressure is usually lower, bringing cold fronts and snow. In summer, pressure is higher, leading to hot and humid weather. Spring and fall pressures are moderate, with mild temperatures.
Potomac has a humid subtropical climate, which means frequent pressure changes and varying weather conditions throughout the year. This leads to an unpredictable and dynamic weather experience.