Barometric Pressure in Ontario, United States

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The pressure in Ontario, California, United States is predicted falling over the next 24 hours, with an average pressure of

971.4

today, which is lower than normal.

Weather prediction: Stormy, much rain

The daily total fluctuation in pressure in Ontario is

1.7

, with a low of

970.5

and a high of

972.2

.

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Forecast

Ontario, California has a Mediterranean climate. This means dry summers and mild, wet winters. The San Bernardino Mountains east of Ontario block wet air from the Pacific Ocean, keeping summers dry. In summer, high air pressure builds, bringing hot, dry air. In winter, low air pressure moves in, bringing rain and cooler temperatures. Overall, Ontario's climate has a big effect on its air pressure, leading to these seasonal weather patterns.