Climatological Report (Monthly)
Issued by NWS

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CXUS56 KMTR 021802
CLMSFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1102 AM PDT WED MAY 2 2018

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2018

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            76   04/22                         78  04/01
LOWEST             45   04/17                         45  04/09
AVG. MAXIMUM     65.7              64.7     1.0     66.2
AVG. MINIMUM     50.9                               50.7
MEAN             58.3              56.9     1.4     58.4
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           2.24              1.29    0.95     2.20
DAILY AVG.       0.07              0.04    0.03     0.07
DAYS >= .01         6                                  9
DAYS >= .10         5                                  6
DAYS >= .50         2                                  1
DAYS >= 1.00        1                                  1
GREATEST
 24 HR. TOTAL    1.11   04/06 TO 04/06           04/06 TO 04/07
                                                          04/30 TO 04/30EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                                                          04/30 TO 04/30EATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S

DEGREE_DAYS
HEATING TOTAL     192               248     -56      191
 SINCE 7/1       1857              2368    -511     2009
COOLING TOTAL       0                 5      -5        2
 SINCE 1/1          4                 6      -2        2
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.6
RESULTANT WIND SPEED/DIRECTION  10/273
HIGHEST WIND SPEED/DIRECTION    33/270    DATE  04/01
HIGHEST GUST SPEED/DIRECTION    40/270    DATE  04/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  5
  0
  0
  0
  0
  0
HAZE                      4

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

$$


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