517 CDUS46 KMTR 120830 CLISFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 130 AM PDT FRI SEP 12 2025 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 11 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1927 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 72 3:05 PM 98 1979 75 -3 67 MINIMUM 62 11:59 PM 49 1951 56 6 53 AVERAGE 67 66 1 60 PRECIPITATION (IN) YESTERDAY 0.00 0.22 2017 0.00 0.00 0.00 MONTH TO DATE 0.02 0.01 0.01 0.00 SINCE OCT 1 16.13 19.58 -3.45 20.23 SINCE JAN 1 7.57 12.61 -5.04 14.90 SNOWFALL (IN) YESTERDAY MM 0.0 MONTH TO DATE T SINCE SEP 1 T SINCE JUL 1 T DEGREE DAYS HEATING YESTERDAY 0 1 -1 5 MONTH TO DATE 1 13 -12 27 SINCE SEP 1 1 13 -12 27 SINCE JUL 1 91 115 -24 157 COOLING YESTERDAY 2 2 0 0 MONTH TO DATE 26 22 4 3 SINCE SEP 1 26 22 4 3 SINCE JAN 1 76 132 -56 77 ................................................................... WIND (MPH) RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION W (280) HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION W (270) HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION W (280) AVERAGE WIND SPEED 12.7 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 86 11:00 PM LOWEST 61 12:00 PM AVERAGE 74 .......................................................... THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 75 100 1979 MINIMUM TEMPERATURE (F) 56 47 1946 1970 SUNRISE AND SUNSET SEPTEMBER 12 2025.....SUNRISE 6:49 AM PDT SUNSET 7:21 PM PDT SEPTEMBER 13 2025.....SUNRISE 6:50 AM PDT SUNSET 7:20 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$