Barometric Pressure in Cornwall, Ontario, CA

The pressure in Cornwall, Canada is predicted to slowly drop over the next few hours, with an average pressure of 1017.1 hPa today, which is considered normal.

Weather prediction: Expect more wet and unsettled conditions

The daily total fluctuation in pressure in Cornwall is 4.9 hPa, with a low of 1014.1 hPa and a high of 1019 hPa. The daily average here is higher than in most cities around the world.

Forecast

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.