Climatological Report (Daily)
Issued by NWS

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768
CDUS46 KMTR 010042
CLICCR

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
542 PM PDT SUN AUG 31 2025

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

...THE CONCORD AIRPORT CLIMATE SUMMARY FOR AUGUST 31 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM        100   3:12 PM 103    2017  87     13       86
  MINIMUM         62   6:00 AM  53    1999  59      3       60
  AVERAGE         81                        73      8       73

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

DEGREE DAYS
 HEATING
  TODAY            0                                         0
  MONTH TO DATE    0                                         0
  SINCE JUN 1      1                                         3
  SINCE JUL 1      0                                         3

 COOLING
  TODAY           16                                         8
  MONTH TO DATE  311                                       301
  SINCE JUN 1    640                                       965
  SINCE JAN 1    751                                      1048
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION  NW (310)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED     5.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    60           6:00 AM
 LOWEST     10           3:00 PM
 AVERAGE    35

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


THE CONCORD AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   87       111      2017
 MINIMUM TEMPERATURE (F)   59        52      2008


SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE   6:38 AM PDT   SUNSET   7:38 PM PDT
SEPTEMBER  1 2025.....SUNRISE   6:38 AM PDT   SUNSET   7:37 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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