CDUS41 KBOX 200526
CLIBOS

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
126 AM EDT WED MAY 20 2026

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

...THE BOSTON MA CLIMATE SUMMARY FOR MAY 19 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         96R   200 PM  90    1949  67     29       64       
                                      1986                           
                                      2017                           
  MINIMUM         68   1224 AM  38    1882  51     17       50       
  AVERAGE         82                        59     23       57     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.20          1.55 1900   0.10   0.10     0.00     
  MONTH TO DATE    0.99                      1.92  -0.93     3.35     
  SINCE MAR 1      6.10                      9.72  -3.62    10.58     
  SINCE JAN 1      9.39                     16.32  -6.93    15.89     

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      0.0      
  SINCE MAR 1      1.9                      10.6   -8.7       T       
  SINCE JUL 1     62.8                      49.2   13.6     28.1      

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        0                         7     -7        8        
  MONTH TO DATE  126                       168    -42       99        
  SINCE MAR 1   1341                      1492   -151     1218        
  SINCE JUL 1   5468                      5430     38     4977        

 COOLING                                                              
  YESTERDAY       17                         1     16        0        
  MONTH TO DATE   27                        11     16       16        
  SINCE MAR 1     30                        15     15       22        
  SINCE JAN 1     30                        15     15       22        
...................................................................


WIND (MPH)                                                            
  RESULTANT WIND SPEED  12   RESULTANT WIND DIRECTION  SW (230)       
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION     W (270)       
  HIGHEST GUST SPEED    46   HIGHEST GUST DIRECTION     W (260)       
  AVERAGE WIND SPEED    13.2                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.3                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  THUNDERSTORM                                                        
  HEAVY RAIN                                                          
  RAIN                                                                
  LIGHT RAIN                                                          
  FOG                                                                 


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88           700 PM                                      
 LOWEST     29           100 PM                                      
 AVERAGE    59                                                        

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THE BOSTON MA CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   68        91      1996                      
 MINIMUM TEMPERATURE (F)   51        40      1892                      


SUNRISE AND SUNSET                                                    
MAY 20 2026...........SUNRISE   518 AM EDT   SUNSET   804 PM EDT     
MAY 21 2026...........SUNRISE   517 AM EDT   SUNSET   805 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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