Climatological Report (Monthly)
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000
CXUS56 KMTR 011005
CLMHWD


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

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

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

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            73   12/14                  66  12/21
LOWEST             35   12/22                  32  12/18
                        12/21
AVG. MAXIMUM     61.5                        58.5
AVG. MINIMUM     40.7                        42.5
MEAN             51.1                        50.5
DAYS MAX >= 90      0                           0
DAYS MAX <= 32      0                           0
DAYS MIN <= 32      0                           1
DAYS MIN <= 0       0                           0

PRECIPITATION (INCHES)
TOTALS           0.05              3.12      2.50
DAILY AVG.       0.00                        0.08
DAYS >= .01         1                           6
DAYS >= .10         0                           4
DAYS >= .50         0                           3

DEGREE_DAYS
HEATING TOTAL     424                         442
 SINCE 7/1        729                         745
COOLING TOTAL       0                           0
 SINCE 1/1        602                         357
..........................................................

WIND (MPH)
AVERAGE WIND SPEED              4.1
RESULTANT WIND SPEED/DIRECTION   2/027
HIGHEST WIND SPEED/DIRECTION    29/340    DATE  12/16
HIGHEST GUST SPEED/DIRECTION    39/330    DATE  12/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.10
NUMBER OF DAYS FAIR           30
NUMBER OF DAYS PC              1
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     54

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      0
HAZE                     11

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

$$



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