335 
CDUS41 KBOX 230552
CLIBOS

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
152 AM EDT SUN MAY 23 2021

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

...THE BOSTON MA CLIMATE SUMMARY FOR MAY 22 2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2021


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         89   1229 PM  93    1959  68     21       82       
  MINIMUM         62    457 AM  39    1894  52     10       54       
  AVERAGE         76                        60     16       68     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          3.23 1920   0.10  -0.10     0.00     
  MONTH TO DATE    1.60                      2.23  -0.63     2.12     
  SINCE MAR 1      7.93                     10.03  -2.10    10.05     
  SINCE JAN 1     13.00                     16.63  -3.63    14.74     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           0.0  2000   0.0    0.0      0.0      
                                      2001                           
                                      2002                           
  MONTH TO DATE    0.0                       0.0    0.0       T       
  SINCE MAR 1      0.2                      10.6  -10.4      0.7      
  SINCE JUL 1     38.6                      49.2  -10.6     15.8      

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        0                         6     -6        0        
  MONTH TO DATE  114                       186    -72      238        
  SINCE MAR 1   1238                      1510   -272     1557        
  SINCE JUL 1   5015                      5448   -433     4940        

 COOLING                                                              
  YESTERDAY       11                         1     10        3        
  MONTH TO DATE   31                        14     17        4        
  SINCE MAR 1     31                        18     13        4        
  SINCE JAN 1     31                        18     13        4        
...................................................................


WIND (MPH)                                                            
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION  SW (210)       
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION    NE (40)        
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION    NE (40)        
  AVERAGE WIND SPEED     7.9                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.9                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  NO SIGNIFICANT WEATHER WAS OBSERVED.                                  


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    73           800 PM                                      
 LOWEST     35           100 PM                                      
 AVERAGE    54                                                        

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


THE BOSTON MA CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   68        93      1964                      
 MINIMUM TEMPERATURE (F)   52        40      1876                      
                                             1882                     
                                             1967                     


SUNRISE AND SUNSET                                                    
MAY 23 2021...........SUNRISE   515 AM EDT   SUNSET   807 PM EDT     
MAY 24 2021...........SUNRISE   515 AM EDT   SUNSET   808 PM EDT     


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




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