CALIFORNIA MEAN MONTHLY AND ANNUAL NUMBER OF DAYS HEAVY FOG
Heavy fog is defined as an observation with 1/4 mile visibility or less sometime during the day. * = less than 1/2 day JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL BAKERSFIELD 8 3 1 * * 0 * * * * 3 8 22 BISHOP * 0 0 * 0 0 0 0 0 0 * * * BLUE CANYON 10 9 11 7 6 2 0 * 1 5 7 10 68 EUREKA 4 3 2 2 1 2 4 5 8 10 6 4 51 FRESNO 12 6 2 * * 0 0 * * 1 6 12 39 LONG BEACH 5 4 3 2 1 2 2 3 4 5 5 6 41 LOS ANGELES AP 4 3 3 2 1 1 2 2 3 5 5 5 37 LOS ANGELES CITY 2 2 1 1 1 1 1 1 1 3 2 2 17 MT SHASTA CITY 2 1 * * 0 * 0 0 * * 1 2 7 OAKLAND 4 2 1 * * 0 0 0 * 2 3 4 17 REDDING 5 1 1 * 0 0 0 0 0 * 2 6 15 RED BLUFF 6 2 1 * * 0 0 0 0 * 2 6 18 SACRAMENTO 10 5 2 * * 0 0 * * 1 5 10 34 SANDBERG 10 12 12 9 7 3 * 1 2 5 6 10 79 SAN DIEGO 3 3 2 1 1 1 1 1 2 3 3 4 23 SAN FRANCISCO AP 4 3 * * * * * * 1 1 2 3 14 SAN FRANCISCO CI SANTA BARBARA 1 2 2 1 1 1 2 2 3 3 1 1 21 SANTA MARIA 5 4 5 6 6 7 8 10 12 12 7 6 87 STOCKTON 12 8 2 * * * 0 * * 2 8 11 42