Climatological Report (Monthly)
Issued by NWS

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163
CXUS56 KMTR 021519
CLMHWD


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

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

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

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017

WEATHER         OBSERVED          NORMAL   LAST YEAR`S
                 VALUE   DATE(S)  VALUE    VALUE  DATE(S)

.........................................................
TEMPERATURE (F)
RECORD
 HIGH              74   MM
 LOW                    12/23/2013
                        12/20/2013
                        12/09/1972
HIGHEST            66   12/21                  67  12/09
LOWEST             32   12/18                  31  12/27
AVG. MAXIMUM     58.5                        57.3
AVG. MINIMUM     42.5                        41.9
MEAN             50.5                        49.6
DAYS MAX >= 90      0                           0
DAYS MAX <= 32      0                           0
DAYS MIN <= 32      1                           1
DAYS MIN <= 0       0                           0

PRECIPITATION (INCHES)
TOTALS           2.50              3.12      2.59
DAILY AVG.       0.08                        0.08
DAYS >= .01         6                          11
DAYS >= .10         4                           7
DAYS >= .50         3                           2

DEGREE_DAYS
HEATING TOTAL     442                         471
 SINCE 7/1        745                         837
COOLING TOTAL       0                           0
 SINCE 1/1        357                         498
..........................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
RESULTANT WIND SPEED/DIRECTION   1/059
HIGHEST WIND SPEED/DIRECTION    25/290    DATE  12/16
HIGHEST GUST SPEED/DIRECTION    34/100    DATE  12/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     62

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       4
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      0
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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