Barometric Pressure in Hereford, United States 
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The pressure in Hereford, Arizona, United States is predicted to drop over the next few hours, with an average pressure of 877.6 hPa today, which is lower than normal.
Weather prediction: Expect wet, unsettled weather and a strong breeze
The daily total fluctuation in pressure in Hereford is 7.1 hPa, with a low of 874 hPa and a high of 881.1 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Hereford hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Hereford, Arizona is typically high during the summer months. It often reaches 30.2 inches of mercury. In the winter, it drops to around 29.8 inches. This slight variation has a minimal impact on daily life.
Hereford is surrounded by mountains to the east and west. The San Rafael Valley lies to the south. The surrounding landscape affects the atmospheric pressure. The mountains block moisture from the Gulf of California. This keeps the air dry and contributes to the high pressure.
The valley allows cool air from the north to enter the area. This cool air sinks, causing the pressure to rise. The unique combination of mountains and valley shapes the local climate.