Barometric Pressure in Fairfax, United States 
0000 hPa
00.0 ℃
00.0%
00.0 m/s
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The pressure in Fairfax, Virginia, United States is predicted falling over the next 24 hours, with an average pressure of today, which is considered normal.
Weather prediction: Rain at times, very unsettled
Rapid Pressure Changes
Rapid pressure changes detected in Fairfax - often a sign of approaching weather shifts. Get accurate local time and alerts on our iOS app.
- Rapid Fall - ()
The daily total fluctuation in pressure in Fairfax is , with a low of and a high of .
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.