Volcan Mountain Foundation

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San Diego County, California


The Volcan Mountain range is home to many microclimates; meaning that its various elevations and angling slopes create different weather patterns.  The Peninsular Range, of which Volcan is a part, causes moisture moving inland from the Pacific to rise up and condense, dripping moisture as rain or snow.  This causes a wet western-facing slope and a dry eastern-facing slope.

Near the 5,850’ high peak in the range, cool weather is present much of the year, especially in the early morning and nights.  Rain can be expected from possible thunderstorms in July and August and snow is not unusual as late as May or as early as November.  These are important things to keep in mind as you prepare to hike the mountain.

In lower elevations around 4,200’, summer temperatures average in the mid to high 80s, but have been known to reach 100˚ or more.  Winter highs average in the mid to high 50s, but lows can dip down into the teens.

On the east side of the range which faces the desert, as little as 12 inches of rain fall a year.  On the west side several inches of rain can fall during a single day in a heavy rainstorm.  The average rainfall is between 30-35 inches a year.

Southern California’s dry, hot summers and wet winters create the Mediterranean climate found in parts of Europe where chaparral and oak woodlands are the dominant plant communities.  Volcan’s higher elevations also produce forest communities of conifers with the additional rainfall.

Come enjoy all of Volcan Mountain’s seasonal weather patterns, but be prepared!