Average Freeze Dates for California 

Location First Freeze Last Freeze Coldest month on record, avg temp, F Coldest winter on record, avg temp, F
Bakersfield November 17 March 3 Jan 1949, 40.4 1949, 44.9
Bishop October 14 May 4  Jan 1949, 23.8 1949, 30.7
Blue Canyon October 22 May 20 Jan 1949, 26.3 1949, 29.7
Eureka December 7  February 13 Jan 1949, 40.3 1949, 43.3
Fresno December 8  February 7 Jan 1949, 39.6 1964, 43.7
Long Beach ---- ---- ---- ----
Los Angeles ---- ---- ---- ----
Mount Shasta September 30 May 24 Jan 1949, 23.8 1949, 27.7
Redding November 21 December 5 Jan 1937, 34.1 1949, 41.8
Sacramento December 1 February 18 Jan 1949, 36.9 1949, 41.4
San Diego ---- ---- ---- ----
San Francisco December 14 January 24 Jan 1949, 42.4 1949, 45.0
Santa Barbara December 8 February 8  Jan 1949, 45.4 1949, 48.3
Santa Maria December 1 March 7 Jan 1949, 43.3 1949, 46.2
Stockton November 28 February 22 Jan 1949, 38.1 1949, 42.2
Yosemite Park October 14 May 10 Jan 1937, 22.8 1917, 31.1

California precipitation or temperature averages and extremes, Los Angeles, San Francisco, San Diego and San Jose
 climate records and averages, California Top 10 extremes, precipitation/temperature data for all U.S. states and
Top 10
U.S. climate extremes

Winter = December, January, February. Data source: Western Regional Climate Center