Climatological Report (Monthly)
Issued by NWS

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CXUS56 KMTR 050028
CLMSFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
528 PM PDT THU JUN 4 2015

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              97   05/27/1984
 LOW               39   05/03/1950
HIGHEST            75   05/01                         92  05/13
LOWEST             50   05/08                         51  05/11
                        05/07                             05/07
AVG. MAXIMUM     64.1              67.6    -3.5     72.0
AVG. MINIMUM     52.9                               54.9
MEAN             58.5              59.6    -1.1     63.5
DAYS MAX >= 90      0                                  2
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.81   1957
 MINIMUM         0.00   2008
                        2001
                        1992
TOTALS           0.02              0.47   -0.45        T
DAILY AVG.       0.00              0.02   -0.02        T
DAYS >= .01         2                                  0
DAYS >= .10         0                                  0
DAYS >= .50         0                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.01   05/22 TO 05/22           05/19 TO 05/19
                                                          05/31 TO 05/31
                                                          05/31 TO 05/31

DEGREE_DAYS
HEATING TOTAL     193               180      13       81
 SINCE 7/1       1471              2548   -1077     1961
COOLING TOTAL       0                13     -13       42
 SINCE 1/1         13                19      -6       63
..................................................

WIND (MPH)
AVERAGE WIND SPEED              12.5
RESULTANT WIND SPEED/DIRECTION  11/263
HIGHEST WIND SPEED/DIRECTION    36/280    DATE  05/12
HIGHEST GUST SPEED/DIRECTION    43/270    DATE  05/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY         19

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     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                       2     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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