0000 hPa
00.00 inHg
00.0 ℃
0.00 ℉
00.0 m/s
00.0 mph
00.0%
Get Alerts 🚨. Sign up to receive alerts when the barometric pressure changes significantly.
The pressure in San Marcos, United States is predicted to rise over the next few hours, with an average pressure of 1009.1 hPa today, which is considered normal.
Weather prediction: Expect fair, dry, cool weather and a strong breeze
The daily total fluctuation in pressure in San Marcos is 3.9 hPa, with a low of 1006.5 hPa and a high of 1010.4 hPa. The daily average here is lower than in most cities around the world.
The barometric pressure in San Marcos, California fluctuates throughout the day. It is influenced by the movement of high and low-pressure systems. Weather fronts can bring changes in pressure.
San Marcos is situated in a valley surrounded by hills. The landscape affects the atmospheric pressure. The hills can block or redirect air masses. This can lead to changes in pressure.
The city's proximity to the Pacific Ocean also plays a role. Moist air from the ocean influences the pressure. The air cools as it moves inland. This cooling can cause the pressure to drop.