Climatological Report (Monthly)
Issued by NWS

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CXUS56 KMTR 020359
CLMSFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
859 PM PDT FRI MAY 1 2015

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              92   04/08/1989
                        04/29/1981
 LOW               36   04/27/1955
HIGHEST            88   04/30                         90  04/30
LOWEST             46   04/06                         47  04/02
AVG. MAXIMUM     66.8              64.7     2.1     69.0
AVG. MINIMUM     50.5                               52.0
MEAN             58.7              56.9     1.8     60.5
DAYS MAX >= 90      0                                  1
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           1.28              1.29   -0.01     1.61
DAILY AVG.       0.04              0.04    0.00     0.06
DAYS >= .01         5                                  5
DAYS >= .10         4                                  4
DAYS >= .50         1                                  1
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.70   04/07 TO 04/07           04/01 TO 04/02
                                                          04/30 TO 04/30
                                                          04/30 TO 04/30

DEGREE_DAYS
HEATING TOTAL     187               248     -61      143
 SINCE 7/1       1278              2368   -1090     1864
COOLING TOTAL       7                 5       2       21
 SINCE 1/1         13                 6       7       21
.................................................

WIND (MPH)
AVERAGE WIND SPEED              12.4
RESULTANT WIND SPEED/DIRECTION  10/272
HIGHEST WIND SPEED/DIRECTION    37/270    DATE  04/25
HIGHEST GUST SPEED/DIRECTION    45/270    DATE  04/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     70

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

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

$$


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