Barometric Pressure in Smithtown, United States 
0000 hPa
00.0 ℃
00.0 m/s
00.0%
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The pressure in Smithtown, New York, United States is predicted to rapidly drop over the next few hours, with an average pressure of 991 hPa today, which is lower than normal.
Weather prediction: Expect storm force weather
The daily total fluctuation in pressure in Smithtown is 16.5 hPa, with a low of 983.2 hPa and a high of 999.7 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Smithtown hour by hour and stay informed about how it will change over the next 6 hours.
Smithtown's weather has changing air pressure due to its location near the ocean and movements of high and low-pressure systems.
High-pressure systems bring dry air, clear skies, and fair weather, while low-pressure systems bring wet air, clouds, and storms.
The town's coastal location and nearby Long Island Sound mean sea air influences air pressure, making it more unstable.
Hills and valleys in Smithtown also disrupt airflow, creating local pressure changes that affect the weather.
In winter, cold air from Canada brings low pressure, causing snow and rain, while warm air from the Gulf Stream raises pressure, bringing calm weather.
Summer's warm ocean air brings high pressure, leading to heat waves and humidity, but cooler air from the north can bring low pressure and storms.
Smithtown's humid subtropical climate has large pressure differences between seasons, making the weather unpredictable and changing frequently.