Climatological Report (Monthly)
Issued by NWS

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CXUS56 KMTR 011005
CLMOAK


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
203 AM PST MON JAN 1 2018

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

...THE OAKLAND AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1948 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              78   MM
 LOW               28   12/05/2013
HIGHEST            67   12/05                         66  12/21
LOWEST             31   12/22                         33  12/19
AVG. MAXIMUM     59.7              56.4     3.3     58.3
AVG. MINIMUM     37.7              41.5    -3.8     42.8
MEAN             48.7                               50.5
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      1                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.29   1955
 MINIMUM         0.09   2017
TOTALS           0.09R             3.66   -3.57     4.14
DAILY AVG.       0.00              0.12   -0.12     0.13
DAYS >= .01         3                                  8
DAYS >= .10         0                                  5
DAYS >= .50         0                                  4
DAYS >= 1.00        0                                  1
GREATEST
 24 HR. TOTAL    0.07   12/20 TO 12/20           12/15 TO 12/15
                                                          12/31 TO 12/31
                                                          12/31 TO 12/31

DEGREE_DAYS
HEATING TOTAL     499               497       2      439
 SINCE 7/1        961              1172    -211      809
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        312               138     174      168
..................................................

WIND (MPH)
AVERAGE WIND SPEED              4.9
RESULTANT WIND SPEED/DIRECTION   1/339
HIGHEST WIND SPEED/DIRECTION    26/340    DATE  12/16
HIGHEST GUST SPEED/DIRECTION    39/330    DATE  12/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           13
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       0
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                     18

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

$$


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