023 CDUS46 KMTR 010829 CLISFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 129 AM PDT FRI MAY 1 2015 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR APRIL 30 2015... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1927 TO 2015 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 88 232 PM 90 2014 66 22 90 1996 1922 MINIMUM 52 405 AM 41 1946 50 2 60 AVERAGE 70 58 12 75 PRECIPITATION (IN) YESTERDAY 0.00 0.71 1983 0.03 -0.03 0.00 MONTH TO DATE 1.28 1.29 -0.01 1.61 SINCE OCT 1 16.31 19.86 -3.55 8.57 SINCE JAN 1 3.35 12.50 -9.15 7.31 SNOWFALL (IN) YESTERDAY 0.0 0.0 MONTH TO DATE 0.0 SINCE MAR 1 0.0 SINCE JUL 1 0.0 DEGREE DAYS HEATING YESTERDAY 0 7 -7 0 MONTH TO DATE 187 247 -60 159 SINCE MAR 1 331 562 -231 335 SINCE JUL 1 1278 2368 -1090 1880 COOLING YESTERDAY 5 0 5 10 MONTH TO DATE 7 5 2 21 SINCE MAR 1 13 6 7 21 SINCE JAN 1 13 6 7 21 .................................................................. WIND (MPH) RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION W (280) HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (280) HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION W (280) AVERAGE WIND SPEED 6.0 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 77 300 AM LOWEST 21 300 PM AVERAGE 49 .......................................................... THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 66 89 1947 MINIMUM TEMPERATURE (F) 50 44 2008 1988 SUNRISE AND SUNSET MAY 1 2015...........SUNRISE 614 AM PDT SUNSET 800 PM PDT MAY 2 2015...........SUNRISE 613 AM PDT SUNSET 800 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$