478 CDUS46 KMTR 290832 CLISFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 132 AM PDT MON SEP 29 2025 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 28 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 2:02 PM 96 2020 75 -5 66 MINIMUM 62 7:10 AM 47 1947 55 7 56 AVERAGE 66 65 1 61 PRECIPITATION (IN) YESTERDAY 0.00 0.17 1976 0.01 -0.01 0.00 MONTH TO DATE 0.04 0.06 -0.02 0.00 SINCE OCT 1 16.15 19.63 -3.48 20.23 SINCE JAN 1 7.59 12.66 -5.07 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 2 -2 4 MONTH TO DATE 3 40 -37 71 SINCE SEP 1 3 40 -37 71 SINCE JUL 1 93 142 -49 201 COOLING YESTERDAY 1 2 -1 0 MONTH TO DATE 71 56 15 18 SINCE SEP 1 71 56 15 18 SINCE JAN 1 121 166 -45 92 ................................................................... WIND (MPH) RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SW (210) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (210) HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (200) AVERAGE WIND SPEED 7.7 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 86 5:00 AM LOWEST 70 12:00 PM AVERAGE 78 .......................................................... THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 75 95 2020 MINIMUM TEMPERATURE (F) 55 45 1950 1955 SUNRISE AND SUNSET SEPTEMBER 29 2025.....SUNRISE 7:04 AM PDT SUNSET 6:55 PM PDT SEPTEMBER 30 2025.....SUNRISE 7:05 AM PDT SUNSET 6:53 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$