Barometric Pressure in Cornwall, Canada 
0000 hPa
00.0 ℃
00.0%
00.0 m/s
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Forecast
Hourly Pressure Trends
Track the barometric pressure in Cornwall hour by hour and stay informed about how it will change over the next 6 hours.
Upcoming Days
Stay informed about the barometric pressure trends in Cornwall for the upcoming days, including daily minimum and maximum readings.
Weather patterns in Cornwall bring fast changes in barometric pressure due to cold arctic air meeting warm Gulf air. This clash causes pressure to rise and fall quickly.
Cornwall's low elevation near the St. Lawrence River and flat landscape allow air masses to move freely, causing pressure changes. Mountains and hills can block or redirect airflow, but Cornwall doesn't have many.
In winter, high pressure dominates, bringing cold and clear weather. In spring and fall, low pressure brings rain and stormy weather. Summer is a mix of both.
Cornwall has a humid continental climate, which means big temperature and pressure changes throughout the year. This leads to a varied and sometimes unpredictable weather experience.