Climatological Report (Daily)
Issued by NWS
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CDUS46 KMTR 190039
CLISJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
539 PM PDT FRI SEP 18 2026
...................................
...THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1893 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 77 3:36 PM 100 1913 81 -4 84
MINIMUM 58 5:04 AM 42 1907 57 1 64
1908
1911
AVERAGE 68 69 -1 74
PRECIPITATION (IN)
TODAY 0.00 2.00 1959 0.00 0.00 0.00
MONTH TO DATE 0.06 0.02 0.04 0.41
SINCE OCT 1 12.79 13.43 -0.64 9.72
SINCE JAN 1 7.43 9.28 -1.85 6.08
SNOWFALL (IN)
TODAY MM 0.0 1947
MONTH TO DATE T
SINCE SEP 1 T
SINCE JUL 1 T
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 2 6 -4 1
COOLING
TODAY 3 4 -1 9
MONTH TO DATE 96 85 11 117
SINCE SEP 1 96 85 11 117
SINCE JAN 1 620 528 92 466
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NW (320)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 5.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 12:00 AM
LOWEST 48 3:00 PM
AVERAGE 66
..........................................................
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 98 2000
MINIMUM TEMPERATURE (F) 57 39 1893
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 6:52 AM PDT SUNSET 7:10 PM PDT
SEPTEMBER 19 2026.....SUNRISE 6:53 AM PDT SUNSET 7:09 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$