


Climatological Report (Daily)
Issued by NWS
Issued by NWS
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378 CDUS46 KMTR 180029 CLISJC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 529 PM PDT FRI OCT 17 2025 ................................... ...THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR OCTOBER 17 2025... VALID TODAY AS OF 0500 PM LOCAL TIME. CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1893 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 77 2:37 PM 95 2020 76 1 75 MINIMUM 49 5:54 AM 31 1893 53 -4 54 AVERAGE 63 64 -1 65 PRECIPITATION (IN) TODAY 0.00 0.36 1914 0.01 -0.01 0.00 MONTH TO DATE 1.97 0.21 1.76 0.00 SINCE OCT 1 1.97 0.21 1.76 0.00 SINCE JAN 1 8.08 9.54 -1.46 13.63 SNOWFALL (IN) TODAY MM 0.0 1947 MONTH TO DATE T SINCE SEP 1 T SINCE JUL 1 T DEGREE DAYS HEATING TODAY 2 2 0 0 MONTH TO DATE 28 25 3 0 SINCE SEP 1 28 37 -9 0 SINCE JUL 1 29 43 -14 0 COOLING TODAY 0 1 -1 0 MONTH TO DATE 32 39 -7 171 SINCE SEP 1 242 169 73 384 SINCE JAN 1 591 612 -21 1194 ................................................................... WIND (MPH) RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SE (120) HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (340) HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION N (350) AVERAGE WIND SPEED 4.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 97 6:00 AM LOWEST 38 2:00 PM AVERAGE 68 .......................................................... THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 76 98 1903 MINIMUM TEMPERATURE (F) 52 30 1893 SUNRISE AND SUNSET OCTOBER 17 2025.......SUNRISE 7:18 AM PDT SUNSET 6:27 PM PDT OCTOBER 18 2025.......SUNRISE 7:19 AM PDT SUNSET 6:26 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$