Climatological Report (Daily)
Issued by NWS

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367
CDUS46 KMTR 020828
CLICCR

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
128 AM PDT TUE SEP 02 2025

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

...THE CONCORD AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 1 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1999 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM        100   3:41 PM 111    2017  87     13       84
  MINIMUM         62   5:59 AM  52    2008  59      3       59
  AVERAGE         81                        73      8       72

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.00
  MONTH TO DATE    0.00                                      0.00
  SINCE OCT 1      4.30                                     12.46
  SINCE JAN 1      2.04                                      9.33

DEGREE DAYS
 HEATING
  YESTERDAY        0                                         0
  MONTH TO DATE    0                                         0
  SINCE SEP 1      0                                         0
  SINCE JUL 1      0                                         3

 COOLING
  YESTERDAY       16                                         7
  MONTH TO DATE   16                                         7
  SINCE SEP 1     16                                         7
  SINCE JAN 1    767                                      1055
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION  NW (310)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED     5.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    87           3:00 AM
 LOWEST     14           3:00 PM
 AVERAGE    51

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


THE CONCORD AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   87       110      2017
 MINIMUM TEMPERATURE (F)   59        50      2012


SUNRISE AND SUNSET
SEPTEMBER  2 2025.....SUNRISE   6:39 AM PDT   SUNSET   7:35 PM PDT
SEPTEMBER  3 2025.....SUNRISE   6:40 AM PDT   SUNSET   7:34 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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