Barometric Pressure in St. John's, Canada 
1007 hPa
15.9 ℃
94%
6.5 m/s
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The average pressure in St. John's, Newfoundland and Labrador, Canada today is , which is considered normal. Pressure is trending rising.
Weather prediction: Fine, possible showers
Rapid Pressure Changes
Rapid pressure changes detected in St. John's, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
- Rapid Fall : ()
- Rapid Rise : ()
The daily total fluctuation in pressure in St. John's is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in St. John's hour by hour across the next 6 hourly readings.
St. John's weather is often stormy and windy due to its location near the Atlantic Ocean where cold Arctic air meets warm air from the Gulf Stream. This clash of air masses makes air pressure constantly change.
St. John's is surrounded by water on three sides, which affects air pressure, making it more unstable and prone to sudden changes. The city's unique geography, with hills and valleys, also impacts air pressure, creating microclimates.
In winter, cold air from the Arctic dominates, bringing low pressure and strong winds. In summer, warm air from the Gulf Stream takes over, bringing high pressure and calmer weather.
St. John's has a marine climate, which means air pressure is often influenced by the ocean's warmth. This leads to mild winters and cool summers, but also makes the weather quite unpredictable.