Climatological Report (Monthly)
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000
CXUS56 KMTR 040213
CLMSFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
709 PM PDT THU AUG 3 2017

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JULY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             105   07/17/1988
 LOW               44   07/29/1951
HIGHEST            85   07/15                         81  07/26
LOWEST             53   07/09                         53  07/29
                                                          07/28
                                                          07/26
AVG. MAXIMUM     72.8              72.0     0.8     71.0
AVG. MINIMUM     55.7                               54.8
MEAN             64.3              63.7     0.6     62.9
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         0.35   1977
 MINIMUM         0.00   2010
                        2009
                        2008
TOTALS           0.00R                T    0.00        T
DAILY AVG.       0.00              0.00    0.00        T
DAYS >= .01         0                                  0
DAYS >= .10         0                                  0
DAYS >= .50         0                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.00   07/31 TO 07/31           07/08 TO 07/08
                        07/30 TO 07/30                    07/31 TO 07/31
                        07/29 TO 07/29                    07/31 TO 07/31

DEGREE_DAYS
HEATING TOTAL      46                65     -19       65
 SINCE 7/1         46                65     -19       65
COOLING TOTAL      30                24       6        4
 SINCE 1/1         80                64      16       54
..................................................

WIND (MPH)
AVERAGE WIND SPEED              13.2
RESULTANT WIND SPEED/DIRECTION  12/291
HIGHEST WIND SPEED/DIRECTION    33/210    DATE  07/24
HIGHEST GUST SPEED/DIRECTION    42/280    DATE  07/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     67

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

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

$$



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