Barometric Pressure in Petaluma, United States 
1011.1 hPa
10.6 ℃
92%
1.17 m/s
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The average pressure in Petaluma, 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 Petaluma is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Petaluma hour by hour across the next 6 hourly readings.
Barometric pressure in Petaluma is influenced by the coastal proximity of the city. The pressure often changes with the tides. It tends to be higher during low tide and lower during high tide.
Petaluma is situated near the Pacific Coast and is surrounded by rolling hills. These hills can create a unique microclimate. The surrounding landscape affects the air pressure, as the hills can block or redirect air masses.
The city's proximity to the coast also affects the atmospheric pressure. The cool Pacific air brings a gentle pressure system. This system minimizes large pressure fluctuations. As a result, Petaluma's weather is generally mild and stable.