Located in Half Moon Bay in San Mateo County, California, Half Moon Bay is at an elevation of 16 feet and was established as a weather station on 01 Jul 1939.

From 1971 to 2000, the following average readings were recorded:

 - - - - - - - - - JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR Average High....... 58.0 58.8 59.1 60.7 61.3 63.4 64.6 65.6 66.5 65.0 61.6 58.2 61.9 Average Low........ 43.4 44.3 44.6 44.8 47.5 49.9 52.0 53.2 52.0 48.8 45.7 43.4 47.5 Monthly Precipitn.. 5.55 4.91 4.36 1.77 .79 .26 .16 .27 .44 1.82 3.53 4.10 27.96 Heating Degree Days 443 376 407 368 328 250 210 177 176 254 341 440 3770 Cooling Degree Days 0 0 0 0 0 0 2 3 4 2 0 0 11 

Location: Half Moon Bay California

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