154 CDUS46 KMTR 190830 CLISFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 130 AM PDT FRI SEP 19 2025 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 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 70 12:46 PM 93 2009 75 -5 71 MINIMUM 60 11:59 PM 46 1955 56 4 55 AVERAGE 65 65 0 63 PRECIPITATION (IN) YESTERDAY 0.02 2.29 1959 0.00 0.02 0.00 MONTH TO DATE 0.04 0.02 0.02 0.00 SINCE OCT 1 16.15 19.59 -3.44 20.23 SINCE JAN 1 7.59 12.62 -5.03 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 2 MONTH TO DATE 2 20 -18 49 SINCE SEP 1 2 20 -18 49 SINCE JUL 1 92 122 -30 179 COOLING YESTERDAY 0 2 -2 0 MONTH TO DATE 40 36 4 3 SINCE SEP 1 40 36 4 3 SINCE JAN 1 90 146 -56 77 ................................................................... WIND (MPH) RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION NW (310) HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION W (290) HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION W (280) AVERAGE WIND SPEED 12.2 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. FOG HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 93 11:00 PM LOWEST 68 10:00 AM AVERAGE 81 .......................................................... THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 75 93 2000 MINIMUM TEMPERATURE (F) 56 46 1947 1954 SUNRISE AND SUNSET SEPTEMBER 19 2025.....SUNRISE 6:55 AM PDT SUNSET 7:10 PM PDT SEPTEMBER 20 2025.....SUNRISE 6:56 AM PDT SUNSET 7:09 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$