Barometric Pressure in Montreal, Canada 
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The pressure in Montreal, Quebec, Canada is predicted to slowly rise over the next few hours, with an average pressure of 993.2 hPa today, which is lower than normal.
Weather prediction: Expect more fair, dry, cool weather
The daily total fluctuation in pressure in Montreal is 6.3 hPa, with a low of 989.5 hPa and a high of 995.8 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Montreal hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Montreal, Quebec, Canada is typically between 980 and 1030 millibars. This range is considered normal. Pressure changes can indicate weather shifts.
Montreal is surrounded by the Saint Lawrence River to the south and the Laurentian Mountains to the north. The river brings moisture from the Atlantic Ocean. The mountains block cold air from the Arctic.
The mountains also create a phenomenon called the "Saint Lawrence River Valley Effect." This effect traps cold air in the valley during winter. It keeps warm air from the Gulf of Mexico from reaching the city.
In summer, the mountains block hot air from the south. The Saint Lawrence River cools the city by 2-3°C compared to inland areas. This results in a more moderate climate.