Barometric Pressure in Fontana, United States 
1009.8 hPa
23.2 ℃
38%
2.79 m/s
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The average pressure in Fontana, California, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at frequent intervals
Rapid Pressure Changes
Rapid pressure changes detected in Fontana, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Rise : ()
The daily total fluctuation in pressure in Fontana is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Fontana hour by hour across the next 6 hourly readings.
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.