831 
CDUS41 KBOX 140539
CLIBOS

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1239 AM EST MON DEC 14 2020

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

...THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 13 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2020


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         59    236 PM  63    1984  42     17       47       
  MINIMUM         40   1159 PM   4    1890  29     11       28       
                                      1893                           
                                      1898                           
  AVERAGE         50                        36     14       38     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          1.67 1873   0.12  -0.12     0.10     
  MONTH TO DATE    2.65                      1.68   0.97     2.52     
  SINCE DEC 1      2.65                      1.68   0.97     2.52     
  SINCE JAN 1     34.52                     41.67  -7.15    46.83     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0          10.1  2007   0.3   -0.3      0.0      
  MONTH TO DATE    0.3                       2.9   -2.6     10.1      
  SINCE DEC 1      0.3                       2.9   -2.6     10.1      
  SINCE JUL 1      4.6                       4.2    0.4     10.1      

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       15                        29    -14       27        
  MONTH TO DATE  328                       355    -27      366        
  SINCE DEC 1    328                       355    -27      366        
  SINCE JUL 1   1215                      1410   -195     1288        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    0                         0      0        0        
  SINCE DEC 1      0                         0      0        0        
  SINCE JAN 1    924                       747    177     1013        
...................................................................


WIND (MPH)                                                            
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION   W (270)       
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION    SW (240)       
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    SW (220)       
  AVERAGE WIND SPEED     6.9                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.8                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM                                      
 LOWEST     53           300 PM                                      
 AVERAGE    77                                                        

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


THE BOSTON MA CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   42        66      1881                      
 MINIMUM TEMPERATURE (F)   29         0      1893                      
                                             1898                     


SUNRISE AND SUNSET                                                    
DECEMBER 14 2020......SUNRISE   706 AM EST   SUNSET   412 PM EST     
DECEMBER 15 2020......SUNRISE   707 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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