Barometric Pressure in Sarnia, Canada 
0000 hPa
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The pressure in Sarnia, Ontario, Canada is predicted to drop over the next few hours, with an average pressure of 981.2 hPa today, which is lower than normal.
Weather prediction: Expect wet, unsettled weather and a strong breeze
The daily total fluctuation in pressure in Sarnia is 4 hPa, with a low of 979 hPa and a high of 983 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Sarnia hour by hour and stay informed about how it will change over the next 6 hours.
Weather patterns in Sarnia bring changes in air pressure, with low-pressure systems bringing rain and high-pressure systems bringing fair weather.
Sarnia's low elevation near Lake Huron and flat landscape allow air masses to move freely, causing pressure changes and varied weather.
In winter, high pressure dominates, bringing cold air, while in summer, low pressure brings warm air and instability.
Sarnia has a humid continental climate, with large pressure fluctuations causing varying weather conditions, making it important to check forecasts for outdoor plans.
(1 km)