Climate
The climate is Mediterranean with cool to cold, wet, in some cases snowy winters (extreme east and north valley areas) and dry, hot summers. Usually the areas north of interstate 210 and east of interstate 215 see colder weather in the winter with occasional snowfall. Sage scrub and the Yucca plant are the predominant natural vegetation along washes and uplands; it intergrades with chaparral at elevations of 600 to 700 m. Other vegetation consists of a patchwork of grasslands, riparian woodlands, and mixed hardwood forests, which border the valley in the mountains on the north and east. The Santa Ana winds blow into the valley from the Cajon Pass, which exits the valley's north end between the San Gabriel and San Bernardino mountains. The seasonal Santa Ana winds are felt particularly strongly in the San Bernardino area as warm and dry air is channeled through nearby Cajon Pass at times during the autumn months. This phenomenon markedly increases the wildfire danger in the foothill, canyon, and mountain communities that the cycle of cold wet winters and dry summers helps create.
| Monthly Normal High and Low Temperatures for San Bernardino | |||||||||||||
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 62 | 66 | 68 | 71 | 77 | 91 | 102 | 103 | 89 | 80 | 71 | 64 | 75 |
| Avg low °F | 34 | 35 | 41 | 46 | 50 | 53 | 60 | 60 | 57 | 50 | 42 | 37 | 46 |
Read more about this topic: San Bernardino Valley
Famous quotes containing the word climate:
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—Thomas Jefferson (1743–1826)
“The climate of Ohio is perfect, considered as the home of an ideal republican people. Climate has much to do with national character.... A climate which permits labor out-of-doors every month in the year and which requires industry to secure comfort—to provide food, shelter, clothing, fuel, etc.—is the very climate which secures the highest civilization.”
—Rutherford Birchard Hayes (1822–1893)
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—Walter Lippmann (1889–1974)