These data are preliminary and have not undergone final quality control by the National Climatic Data Center (NCDC). Therefore, these data are subject to revision. Final and certified climate data can be accessed at the NCDC - http://www.ncdc.noaa.gov.

Climatological Report (Daily)


000
CDUS46 KMTR 110035
CLISFO

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
535 PM PDT MON MAY 10 2021

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 10 2021...
VALID TODAY AS OF 0500 PM LOCAL TIME.

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1927 TO 2021


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         84R  2:43 PM  84    2006  68     16       71
  MINIMUM         52   5:30 AM  43    1953  51      1       50
  AVERAGE         68                        59      9       61

PRECIPITATION (IN)
  TODAY            0.00          0.20 1963   0.01  -0.01     0.00
  MONTH TO DATE    T                         0.19  -0.19     0.00
  SINCE OCT 1      7.25                     19.10 -11.85     8.87
  SINCE JAN 1      5.55                     12.13  -6.58     3.86

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

DEGREE DAYS
 HEATING
  TODAY            0                         6     -6        4
  MONTH TO DATE   34                        63    -29       37
  SINCE MAR 1    560                       593    -33      549
  SINCE JUL 1   1939                      2272   -333     1930

 COOLING
  TODAY            3                         0      3        0
  MONTH TO DATE    3                         0      3        5
  SINCE MAR 1     12                         6      6        5
  SINCE JAN 1     12                         6      6        5
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   9   RESULTANT WIND DIRECTION  NW (300)
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     9.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80           4:00 AM
 LOWEST     23           2:00 PM
 AVERAGE    52

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   68        85      1959
 MINIMUM TEMPERATURE (F)   51        42      1953
                                             1982


SUNRISE AND SUNSET
MAY 10 2021...........SUNRISE   6:04 AM PDT   SUNSET   8:08 PM PDT
MAY 11 2021...........SUNRISE   6:03 AM PDT   SUNSET   8:09 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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