


Climatological Report (Daily)
Issued by NWS
Issued by NWS
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784 CDUS46 KSGX 220024 CLISAN CLIMATE REPORT NATIONAL WEATHER SERVICE SAN DIEGO, CA 524 PM PDT THU AUG 21 2025 ................................... ...THE SAN DIEGO INTL AIRPORT CA CLIMATE SUMMARY FOR AUGUST 21 2025... VALID TODAY AS OF 0400 PM LOCAL TIME. CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1874 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 81 1:07 PM 89 1982 78 3 83 MINIMUM 67 5:30 AM 58 1877 68 -1 70 1884 1916 AVERAGE 74 73 1 77 PRECIPITATION (IN) TODAY 0.00 1.35 1854 0.00 0.00 0.00 MONTH TO DATE 0.00 0.01 -0.01 T SINCE JUL 1 0.00 0.09 -0.09 T SINCE OCT 1 4.56 9.67 -5.11 12.41 SINCE JAN 1 4.42 6.71 -2.29 11.00 DEGREE DAYS HEATING TODAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE JUN 1 5 11 -6 6 SINCE JUL 1 0 1 -1 0 COOLING TODAY 9 8 1 12 MONTH TO DATE 106 153 -47 199 SINCE JUN 1 294 405 -111 499 SINCE JAN 1 334 483 -149 500 ................................................................... WIND (MPH) RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (180) HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (200) HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM AVERAGE WIND SPEED 4.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.6 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 93 4:00 AM LOWEST 54 1:00 PM AVERAGE 74 .......................................................... THE SAN DIEGO INTL AIRPORT CA CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 78 90 1972 MINIMUM TEMPERATURE (F) 68 59 1879 1900 1916 SUNRISE AND SUNSET AUGUST 21 2025........SUNRISE 6:16 AM PDT SUNSET 7:26 PM PDT AUGUST 22 2025........SUNRISE 6:17 AM PDT SUNSET 7:25 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$