Climatological Report (Monthly)
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CXUS56 KMTR 012355
CLMCCR


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
355 PM PST TUE JAN 1 2019

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

...THE CONCORD AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1999 TO 2018

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            66   12/12                         67  12/16
                                                          12/14
                                                          12/11
LOWEST             35   12/29                         33  12/22
                                                          12/21
                                                          12/13
AVG. MAXIMUM     60.3                               62.9
AVG. MINIMUM     43.0                               37.2
MEAN             51.6                               50.1
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
TOTALS           1.49              3.14   -1.65     0.10
DAILY AVG.       0.05                               0.00
DAYS >= .01         7                                  2
DAYS >= .10         4                                  0
DAYS >= .50         1                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.68   12/16 TO 12/16           12/20 TO 12/20
                                                          12/03 TO 12/03EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          12/03 TO 12/03EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

DEGREE_DAYS
HEATING TOTAL     406                                456
 SINCE 7/1        659                                692
COOLING TOTAL       0                                  0
 SINCE 1/1       1216                               1424
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.6
RESULTANT WIND SPEED/DIRECTION   1/061
HIGHEST WIND SPEED/DIRECTION    29/270    DATE  12/24
HIGHEST GUST SPEED/DIRECTION   9999MM/    DATE  12/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  3
  0
  0
  0
  0
  7
HAZE                     16

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

$$


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