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The maximum frost depth observed in the contiguous United States ranges from 0 to 8 feet (2.4 m). [1] Below that depth, the temperature varies, but is always above 0 °C (32 °F). Alternatively, in Arctic and Antarctic locations the freezing depth is so deep that it becomes year-round permafrost , and the term " thaw depth " is used instead.
The record high snow depth is 43 inches, seen on 1/3/1965 and 2/3/1937. 59.4 days a year reach 90 degrees, and 136.9 dip to 32 degrees, including 0.9 in June. Forest Glen has seen frost every month of the year, but the 30% chance date in the spring is in mid-June, and in the fall it is mid-to-late-September.
East Los Angeles, the Gateway Cities, and parts of the San Gabriel Valley average the warmest winter high temps (72 °F, 22 °C) in all of the western U.S., and Santa Monica averages the warmest winter lows (52 °F, 11 °C) in all of the western U.S. Palm Springs, a city in the Coachella Valley, averages high/low/mean temperatures of 75 °F/50 ...
Snowfall inside the city of Los Angeles is rare. The record snowfall occurred on January 19, 1949, when 3.0 inches (7.6 cm) of snow fell inside city limits, however Burbank reported 4.7 inches. Since official records were first kept in 1877, the downtown Los Angeles weather station observed measurable snowfall three times, in 1882, 1932, and 1949.
Permafrost temperature profile. Permafrost occupies the middle zone, with the active layer above it, while geothermal activity keeps the lowest layer above freezing. The vertical 0 °C or 32 °F line denotes the average annual temperature that is crucial for the upper and lower limit of the permafrost zone, while the red lines represent seasonal temperature changes and seasonal temperature ...
Most in one calendar month: 9.91 meters (390 inches) of snow fell in Tamarack, California, in January 1911, leading to a snow depth in March of 11.46 meters (451 inches) (greatest measured in North America). [306] [307] Most in one season (1 July – 30 June): 29.0 meters, (95 ft); Mount Baker, Washington, United States, 1998 through 1999. [306]
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History of Nevada City, California (10 P) O. History of Oakland, California (11 C, 78 P) ... Pages in category "Histories of cities in California"