590  
CXUS51 KBOX 011730  
CLMBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1230 PM EST WED FEB 01 2023  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2023
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1872 TO 2023  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE  
NORMAL    
..........................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 74 01/12/2020  
LOW -13 01/24/1882  
HIGHEST 58 01/13 52  
LOWEST 23 01/11 4  
01/31  
AVG. MAXIMUM 43.6 36.8 6.8  
AVG. MINIMUM 32.1 23.1 9.0  
MEAN 37.8 29.9 7.9  
DAYS MAX >= 90 0 0.0 0.0  
DAYS MAX <= 32 0 9.7 -9.7  
DAYS MIN <= 32 17 24.8 -7.8  
DAYS MIN <= 0 0 0.4 -0.4  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 10.55 1979  
MINIMUM 0.61 1989  
TOTALS 5.23 3.39 1.84  
DAILY AVG. 0.17 0.11 0.06  
DAYS >= .01 20 11.8 8.2  
DAYS >= .10 12 6.6 5.4  
DAYS >= .50 3 2.5 0.5  
DAYS >= 1.00 0 0.8 -0.8  
GREATEST  
24 HR. TOTAL 1.03 01/19 TO 01/20  
 
SNOWFALL (INCHES)  
RECORDS  
MAXIMUM 43.3 2005  
MINIMUM 0.3 1913  
TOTALS 6.9 14.3 -7.4  
LIQUID EQUIV 0.70  
SINCE 7/1 7.9 24.2 -16.3  
DAYS >= TRACE 14 6.6 7.4  
DAYS >= 1.0 3 3.5 -0.5  
GREATEST  
24 HR TOTAL 2.3 01/23 TO 01/23  
 
DEGREE DAYS  
HEATING TOTAL 835 1086 -251  
SINCE 7/1 2482 3012 -530  
COOLING TOTAL 0 0 0  
SINCE 1/1 0 0 0    
..........................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 10.7  
RESULTANT WIND SPEED/DIRECTION 5/300  
HIGHEST WIND SPEED/DIRECTION 36/060 DATE 01/20  
HIGHEST GUST SPEED/DIRECTION 46/280 DATE 01/26  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.80  
NUMBER OF DAYS FAIR 1  
NUMBER OF DAYS PC 13  
NUMBER OF DAYS CLOUDY 17  
 
AVERAGE RH (PERCENT) 76  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 1  
HEAVY RAIN 2 RAIN 10  
LIGHT RAIN 19 FREEZING RAIN 0  
LT FREEZING RAIN 1 HAIL 0  
HEAVY SNOW 0 SNOW 3  
LIGHT SNOW 13 SLEET 4  
FOG 20 FOG W/VIS <= 1/4 MILE 1  
HAZE 2  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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