Barometric Pressure Forecast for Fontana, California
This barometric pressure forecast for Fontana, California, covers an Inland Empire city south of the San Gabriel Mountains and near the Cajon Pass corridor.
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Pressure and weather in Fontana
Cool-season storms move inland from the Pacific, while pressure differences between the interior and coast can support strong offshore winds. Fontana can experience especially gusty conditions near routes leading toward Cajon Pass; summer brings prolonged inland heat between passing disturbances.
What this means for you
Use road and wind advisories when traveling on exposed freeway sections around Fontana. In a weather migraine diary, distinguish a windy drive from a pressure change measured at your usual location.