Barometric Pressure in Fairfax, United States 
0000 hPa
00.0 ℃
00.0 m/s
00.0%
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The pressure in Fairfax, Virginia, United States is predicted to drop over the next few hours, with an average pressure of 1004.8 hPa today, which is lower than normal.
Weather prediction: Expect wet, unsettled weather and a strong breeze
The daily total fluctuation in pressure in Fairfax is 8.3 hPa, with a low of 999.4 hPa and a high of 1007.7 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Fairfax hour by hour and stay informed about how it will change over the next 6 hours.
Fairfax's weather pattern moves from high to low pressure and back to high again, causing changes in the air pressure.
The area's 300-foot elevation and mix of hills and valleys affect atmospheric pressure, making it change often. The nearby Blue Ridge Mountains also influence pressure patterns.
In winter, pressure is usually high, bringing cold air. In summer, pressure is lower, making it hot and humid. Spring and autumn have moderate pressure, with mild weather.
Fairfax has a humid subtropical climate, with noticeable changes in barometric pressure throughout the year, which affects the weather and how people feel.