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000
CXUS56 KMTR 011956
CLMSFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1256 PM PDT WED MAY 1 2013

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              92   04/08/1989
                        04/29/1981
 LOW               36   04/27/1955
HIGHEST            83   04/22                         80  04/21
LOWEST             45   04/16                         41  04/07
AVG. MAXIMUM     67.4              64.7     2.7     64.0
AVG. MINIMUM     49.5                               49.8
MEAN             58.5              56.9     1.6     56.9
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.36   1958
 MINIMUM         0.00   1977
                        1949
TOTALS           0.47              1.29   -0.82     2.79
DAILY AVG.       0.02              0.04   -0.02     0.09
DAYS >= .01         4                                  8
DAYS >= .10         2                                  4
DAYS >= .50         0                                  2
DAYS >= 1.00        0                                  1
GREATEST
 24 HR. TOTAL    0.31   04/04 TO 04/04           04/12 TO 04/13
                                                          04/30 TO 04/30
                                                          04/30 TO 04/30

DEGREE_DAYS
HEATING TOTAL     192               248     -56      239
 SINCE 7/1       2391              2368      23     2507
COOLING TOTAL       4                 5      -1        5
 SINCE 1/1          4                 6      -2        5
.................................................

WIND (MPH)
AVERAGE WIND SPEED              13.1
RESULTANT WIND SPEED/DIRECTION  12/280
HIGHEST WIND SPEED/DIRECTION    47/280    DATE  04/08
HIGHEST GUST SPEED/DIRECTION    60/280    DATE  04/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       1
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      0
HAZE                      4

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

$$