Barometric Pressure
Barometric Pressure in Cornwall, United States 
Pressure
1013 hPa
Temperature
15.0 ℃
Humidity
50%
Wind
3.0 m/s
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Forecast
Hourly Pressure Trends
Track the barometric pressure in Cornwall hour by hour across the next 6 hourly readings.
Cornwall, Pennsylvania has changing air pressure due to its location near mountains and the Atlantic Ocean. Mountains block and redirect winds, affecting air pressure. In winter, cold air from Canada brings low pressure and cooler temperatures. In summer, warm air from the Atlantic Ocean brings high pressure and warmer temperatures. Cornwall has a humid continental climate, meaning it has big temperature differences between seasons, which affects air pressure.