421 
CDUS41 KBOX 120537
CLIBOS

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1237 AM EST SUN DEC 12 2021

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

...THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 11 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         64   1112 PM  68    1911  43     21       51       
  MINIMUM         35   1241 AM  -2    1876  31      4       28       
  AVERAGE         50                        37     13       40     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.25          1.52 1936   0.14   0.11     0.00     
  MONTH TO DATE    0.53                      1.60  -1.07     2.15     
  SINCE DEC 1      0.53                      1.60  -1.07     2.15     
  SINCE JAN 1     50.41                     40.89   9.52    34.02     

SNOWFALL (IN)                                                              
  YESTERDAY       MM             2.8  2019   0.2   MM        0.0      
  MONTH TO DATE    0.3                       2.3   -2.0      0.3      
  SINCE DEC 1      0.3                       2.3   -2.0      0.3      
  SINCE JUL 1      0.3                       3.2   -2.9      4.6      

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       15                        28    -13       25        
  MONTH TO DATE  267                       294    -27      289        
  SINCE DEC 1    267                       294    -27      289        
  SINCE JUL 1   1055                      1308   -253     1176        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    0                         0      0        0        
  SINCE DEC 1      0                         0      0        0        
  SINCE JAN 1   1146                       800    346      924        
...................................................................


WIND (MPH)                                                            
  RESULTANT WIND SPEED   8   RESULTANT WIND DIRECTION  SW (230)       
  HIGHEST WIND SPEED    33   HIGHEST WIND DIRECTION    SW (210)       
  HIGHEST GUST SPEED    44   HIGHEST GUST DIRECTION    SW (210)       
  AVERAGE WIND SPEED    12.7                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 1.0                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  RAIN                                                                
  LIGHT RAIN                                                          
  FOG                                                                 
  FOG W/VISIBILITY <= 1/4 MILE                                        


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1000 AM                                      
 LOWEST     78          1100 PM                                      
 AVERAGE    89                                                        

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


THE BOSTON MA CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   43        68      1911                      
                                             1979                     
 MINIMUM TEMPERATURE (F)   30         2      1988                      


SUNRISE AND SUNSET                                                    
DECEMBER 12 2021......SUNRISE   704 AM EST   SUNSET   412 PM EST     
DECEMBER 13 2021......SUNRISE   705 AM EST   SUNSET   412 PM EST     


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




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