Barometric Pressure
Barometric Pressure in Cornwall, United States 
1027.2 hPa
9.1 ℃
85%
2.69 m/s
Get Alerts 🚨. Sign up to receive alerts when the barometric pressure changes significantly.
The average pressure in Cornwall, Pennsylvania, United States today is , which is higher than normal. Pressure is trending falling.
Weather prediction: Rain at times, very unsettled
Rapid Pressure Changes
Rapid pressure changes detected in Cornwall, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
The daily total fluctuation in pressure in Cornwall is , with a low of and a high of .
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.