Barometric Pressure in Fontana, United States 
0000 hPa
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The pressure in Fontana, California, United States is predicted to slowly drop over the next few hours, with an average pressure of 969.1 hPa today, which is lower than normal.
Weather prediction: Expect more wet and unsettled conditions
The daily total fluctuation in pressure in Fontana is 3.1 hPa, with a low of 967.8 hPa and a high of 970.9 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Fontana hour by hour and stay informed about how it will change over the next 6 hours.
The weather in Fontana, California, has high barometric pressure during the night and low pressure during the day due to temperature changes. This daily pattern affects the weather forecast.
Fontana's elevation of 1,043 feet above sea level and its location in a valley influence atmospheric pressure, making it vary more than in coastal areas. Mountains surrounding the valley also impact pressure.
In winter, barometric pressure is high due to cold air, and low-pressure systems bring rain. In summer, low pressure dominates, causing hot and dry weather. Spring and autumn have moderate pressure.
Fontana has a Mediterranean climate, characterized by mild winters and hot summers, which leads to large barometric pressure fluctuations, affecting the weather and people's daily activities.