Climatological Report (Monthly)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
920
CXUS56 KMTR 040109
CLMSFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
609 PM PDT SAT JUN 3 2017

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 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              97   05/27/1984
 LOW               39   05/03/1950
HIGHEST            87   05/20                         87  05/17
                        05/03
LOWEST             49   05/18                         51  05/03
                        05/14                             05/02
                        05/13
AVG. MAXIMUM     69.8              67.6     2.2     69.1
AVG. MINIMUM     52.0                               53.7
MEAN             60.9              59.6     1.3     61.4
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.81   1957
 MINIMUM         0.00   2008
                        2001
                        1992
TOTALS              T              0.47   -0.47     0.05
DAILY AVG.          T              0.02   -0.02     0.00
DAYS >= .01         0                                  3
DAYS >= .10         0                                  0
DAYS >= .50         0                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL       T   05/16 TO 05/16           05/06 TO 05/06
                                                          05/31 TO 05/31
                                                          05/31 TO 05/31

DEGREE_DAYS
HEATING TOTAL     140               180     -40      116
 SINCE 7/1       2149              2548    -399     1884
COOLING TOTAL      21                13       8       13
 SINCE 1/1         23                19       4       33
..................................................

WIND (MPH)
AVERAGE WIND SPEED              14.7
RESULTANT WIND SPEED/DIRECTION  13/273
HIGHEST WIND SPEED/DIRECTION    43/270    DATE  05/05
HIGHEST GUST SPEED/DIRECTION    50/270    DATE  05/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       1     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.

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.