Climatological Report (Daily)
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571
CDUS46 KMTR 020044
CLISFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
544 PM PDT FRI AUG 01 2025

...................................

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 1 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         68   2:20 PM  89    1975  73     -5       68
  MINIMUM         57   6:02 AM  48    1951  56      1       54
  AVERAGE         63                        64     -1       61

PRECIPITATION (IN)
  TODAY            0.00          0.01 2022   0.00   0.00     0.00
  MONTH TO DATE    0.00                      0.00   0.00     0.00
  SINCE OCT 1     16.11                     19.53  -3.42    20.13
  SINCE JAN 1      7.55                     12.56  -5.01    14.80

SNOWFALL (IN)
  TODAY           MM             0.0
  MONTH TO DATE   MM
  SINCE JUN 1      T
  SINCE JUL 1      T
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  TODAY            2                         2      0        4
  MONTH TO DATE    2                         2      0        4
  SINCE JUN 1    214                       157     57      167
  SINCE JUL 1     71                        60     11       54

 COOLING
  TODAY            0                         1     -1        0
  MONTH TO DATE    0                         1     -1        0
  SINCE JUN 1      2                        50    -48       49
  SINCE JAN 1      8                        70    -62       60
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED  13   RESULTANT WIND DIRECTION   W (270)
  HIGHEST WIND SPEED    26   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    13.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89           6:00 AM
 LOWEST     61          12:00 PM
 AVERAGE    75

..........................................................


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   73        91      1946
 MINIMUM TEMPERATURE (F)   56        49      1945
                                             1982


SUNRISE AND SUNSET
AUGUST  1 2025........SUNRISE   6:14 AM PDT   SUNSET   8:17 PM PDT
AUGUST  2 2025........SUNRISE   6:15 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.




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