816
CXUS56 KMTR 010834
CLMCCR

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1234 AM PST THU JAN 01 2026

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

...THE CONCORD AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025...

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

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             75   MM
 LOW              24   12/10/2013
HIGHEST           67   12/17                          69  12/04
                                                          12/08
LOWEST            36   12/28                          35  12/31
AVG. MAXIMUM    55.4                                59.8
AVG. MINIMUM    44.4                                43.7
MEAN            49.9                                51.8
DAYS MAX >= 90     0                                   0
DAYS MAX <= 32     0                                   0
DAYS MIN <= 32     0                                   0
DAYS MIN <= 0      0                                   0

PRECIPITATION (INCHES)
TOTALS          1.42               3.18   -1.76     1.61
DAILY AVG.      0.05                                0.05
DAYS >= .01        4                                   6
DAYS >= .10        3                                   4
DAYS >= .50        1                                   0
DAYS >= 1.00       0                                   0
GREATEST
 24 HR. TOTAL   0.76   12/24 TO 12/25               0.79  12/13 TO 12/14


DEGREE DAYS
HEATING TOTAL    462                                 401
 SINCE 7/1       759                                  MM
COOLING TOTAL      0                                   0
 SINCE 1/1      1035                                  MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.6
RESULTANT WIND SPEED/DIRECTION   1/080
HIGHEST WIND SPEED/DIRECTION    35/150    DATE  12/25
HIGHEST GUST SPEED/DIRECTION    53/180    DATE  12/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.74
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY         22

AVERAGE RH (PERCENT)     85

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      30     FOG W/VIS <= 1/4 MILE      6
HAZE                     17

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$