Barometric Pressure in Montreal, Canada 
1002.5 hPa
10.1 ℃
90%
3.32 m/s
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The average pressure in Montreal, Quebec, Canada today is , which is lower than normal. Pressure is trending rising.
Weather prediction: Fine, becoming less settled
Rapid Pressure Changes
Rapid pressure changes detected in Montreal, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
The daily total fluctuation in pressure in Montreal is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Montreal hour by hour across the next 6 hourly readings.
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.