CDUS46 KMTR 180937 CLISFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 237 AM PDT MON MAY 18 2026 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 17 2026... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1927 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 73 6:03 PM 93 1997 68 5 63 2009 MINIMUM 50 5:12 AM 45 1966 52 -2 52 AVERAGE 62 60 2 58 PRECIPITATION (IN) YESTERDAY 0.00 0.24 1994 0.01 -0.01 0.00 MONTH TO DATE 0.11 0.30 -0.19 0.11 SINCE OCT 1 19.38 19.21 0.17 16.11 SINCE JAN 1 10.53 12.24 -1.71 7.55 SNOWFALL (IN) YESTERDAY MM 0.0 MONTH TO DATE T SINCE MAR 1 T SINCE JUL 1 T DEGREE DAYS HEATING YESTERDAY 3 5 -2 7 MONTH TO DATE 100 104 -4 91 SINCE MAR 1 373 634 -261 645 SINCE JUL 1 1721 2313 -592 2178 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 2 SINCE MAR 1 36 6 30 5 SINCE JAN 1 37 6 31 5 ................................................................... WIND (MPH) RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION W (290) HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION N (350) HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION N (350) AVERAGE WIND SPEED 16.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.2 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 80 5:00 AM LOWEST 28 11:00 PM AVERAGE 54 .......................................................... THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 68 85 1978 MINIMUM TEMPERATURE (F) 52 42 1950 1974 SUNRISE AND SUNSET MAY 18 2026...........SUNRISE 5:58 AM PDT SUNSET 8:15 PM PDT MAY 19 2026...........SUNRISE 5:57 AM PDT SUNSET 8:16 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$