Climatological Report (Monthly)
Issued by NWS

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CXUS56 KMTR 011553
CLMSFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
743 AM PST WED FEB 1 2017

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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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              74   01/31/2015
 LOW               26   01/05/1949
HIGHEST            64   01/08                         62  01/21
                                                          01/19
LOWEST             38   01/06                         37  01/01
AVG. MAXIMUM     56.5              56.3     0.2     57.0
AVG. MINIMUM     44.7                               48.4
MEAN             50.6              50.3     0.3     52.7
DAYS MAX >= 90      0                                  0
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.26   1993
 MINIMUM         0.00   2015
TOTALS           9.33              4.19    5.14     5.58
DAILY AVG.       0.30              0.14    0.16     0.18
DAYS >= .01        16                                 16
DAYS >= .10        13                                 10
DAYS >= .50         7                                  5
DAYS >= 1.00        3                                  2
GREATEST
 24 HR. TOTAL    1.88   01/09 TO 01/10           01/05 TO 01/06
                                                          01/31 TO 01/31
                                                          01/31 TO 01/31

DEGREE_DAYS
HEATING TOTAL     439               457     -18      373
 SINCE 7/1       1290              1467    -177     1173
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
..................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
RESULTANT WIND SPEED/DIRECTION   3/196
HIGHEST WIND SPEED/DIRECTION    47/180    DATE  01/08
HIGHEST GUST SPEED/DIRECTION    61/180    DATE  01/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            9
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                      13
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      0
HAZE                     17

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

$$


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