Barometric Pressure in Lancaster, United States 
1013.1 hPa
19.1 ℃
50%
4.21 m/s
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The average pressure in Lancaster, Pennsylvania, United States today is , which is considered normal. Pressure is trending rising.
Weather prediction: Fine, possible showers
Rapid Pressure Changes
Rapid pressure changes detected in Lancaster, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
- Rapid Fall : ()
- Rapid Rise : ()
The daily total fluctuation in pressure in Lancaster is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Lancaster hour by hour across the next 6 hourly readings.
Changes in Lancaster's weather patterns cause barometric pressure to rise and fall. When a low-pressure system approaches, pressure drops, and when a high-pressure system arrives, pressure increases.
Lancaster's elevation of about 360 feet above sea level and surrounding hills influence atmospheric pressure. The surrounding mountains can trap or redirect air masses, making pressure more variable.
In winter, high pressure usually dominates, bringing cold air and clear skies. In summer, low pressure prevails, leading to warm air and thunderstorms. Spring and fall see more balanced pressure, with a mix of weather.
Lancaster has a humid continental climate, with significant pressure fluctuations throughout the year, making the weather quite changeable and influencing local weather experiences.