Barometric Pressure in San Ramon, California, US

The pressure in San Ramon, United States is predicted to rise over the next few hours, with an average pressure of 1004.9 hPa today, which is lower than normal.

Weather prediction: Expect fair, dry, cool weather and a strong breeze

The daily total fluctuation in pressure in San Ramon is 4.8 hPa, with a low of 1002.7 hPa and a high of 1007.5 hPa. The daily average here is higher than in most cities around the world.

Forecast

The barometric pressure in San Ramon, California averages around 30.12 inches. This is slightly higher than the national average. The pressure is usually highest in the morning and lowest at night.

San Ramon is situated in the San Ramon Valley. The city is surrounded by mountains to the north and east. These mountains block winds from the Pacific Ocean. They also trap heat and moisture in the valley.

The valley's geography affects the barometric pressure. The cooler air from the ocean meets the warmer air in the valley. This creates a pressure gradient. The gradient causes pressure to rise and fall throughout the day.