Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KMTR 021519
CLMCCR


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
718 AM PST MON JAN 2 2017

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

...THE CONCORD AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1999 TO 2017

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            64   12/30                         68  12/09
                        12/15
                        12/03
LOWEST             29   12/19                         28  12/27
AVG. MAXIMUM     57.3                               57.4
AVG. MINIMUM     38.7                               39.8
MEAN             48.0                               48.6
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      5                                  5
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS           2.19              3.14   -0.95     2.04
DAILY AVG.       0.07                               0.07
DAYS >= .01         8                                 13
DAYS >= .10         4                                  8
DAYS >= .50         1                                  0
DAYS >= 1.00        1                                  0
GREATEST
 24 HR. TOTAL    1.03   12/15 TO 12/15           12/20 TO 12/21
                                                          12/31 TO 12/31
                                                          12/31 TO 12/31

DEGREE_DAYS
HEATING TOTAL     503                                501
 SINCE 7/1        795                                860
COOLING TOTAL       0                                  0
 SINCE 1/1       1093                               1319
..................................................

WIND (MPH)
AVERAGE WIND SPEED              4.5
RESULTANT WIND SPEED/DIRECTION   0/202
HIGHEST WIND SPEED/DIRECTION    24/290    DATE  12/16
HIGHEST GUST SPEED/DIRECTION    33/190    DATE  12/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              3
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      1
HAZE                     12

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

$$



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