Barometric Pressure in San Francisco, United States 
1009.3 hPa
14.1 ℃
100%
3.24 m/s
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The average pressure in San Francisco, California, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at frequent intervals
The daily total fluctuation in pressure in San Francisco is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in San Francisco hour by hour across the next 6 hourly readings.
In San Francisco, the barometric pressure varies throughout the year due to the changing seasons. During the summer months, there is typically high pressure, resulting in foggy mornings and cooler temperatures. In the winter, the barometric pressure tends to be lower, bringing rainy and windy conditions to the city.
The unique landscape around San Francisco, with the Pacific Ocean to the west and the coastal mountain ranges to the east, greatly influences the atmospheric pressure in the area. The oceanic breeze often pushes cool air towards the city, while the mountains can cause changes in wind patterns and pressure systems. These factors contribute to the ever-changing weather conditions in San Francisco.