CDUS46 KMTR 180937
CLISFD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
237 AM PDT MON MAY 18 2026

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

...THE SAN FRANCISCO DWTN CA CLIMATE SUMMARY FOR MAY 17 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1850 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         75   4:43 PM  85    2009  64     11       59        
  MINIMUM         51   5:43 AM  44    1906  52     -1       50        
  AVERAGE         63                        58      5       55     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          0.93 1879   0.02  -0.02     0.00     
  MONTH TO DATE    0.14                      0.44  -0.30     0.15     
  SINCE OCT 1     20.02                     22.26  -2.24    19.75     
  SINCE JAN 1     11.09                     13.96  -2.87     9.55     

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        2                         8     -6       10        
  MONTH TO DATE  124                       136    -12      127        
  SINCE MAR 1    435                       698   -263      710        
  SINCE JUL 1   1920                      2516   -596     2310        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    0                         0      0        4        
  SINCE MAR 1     43                         7     36        6        
  SINCE JAN 1     46                         7     39        6        
...................................................................


THE SAN FRANCISCO DWTN CA CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   64        88      1892                      
 MINIMUM TEMPERATURE (F)   52        46      1896                      


SUNRISE AND SUNSET                                                    
MAY 18 2026...........SUNRISE   5:57 AM PDT   SUNSET   8:15 PM PDT     
MAY 19 2026...........SUNRISE   5:57 AM PDT   SUNSET   8:16 PM PDT     


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




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