684  
CDUS41 KLWX 180521  
CLIBWI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
121 AM EDT FRI SEP 18 2020  
   
...............................
 
 
   
..THE BALTIMORE MD CLIMATE SUMMARY FOR SEPTEMBER 17 2020
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1871 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 75 12:57 PM 97 1991 78 -3 82  
MINIMUM 60 12:09 AM 44 1984 57 3 62  
AVERAGE 68 67 1 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.14 3.94 1876 0.14 0.00 0.00  
MONTH TO DATE 2.50 2.18 0.32 0.15  
SINCE SEP 1 2.50 2.18 0.32 0.15  
SINCE JAN 1 40.11 30.03 10.08 27.24  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 8 10 -2 0  
SINCE SEP 1 8 10 -2 0  
SINCE JUL 1 8 11 -3 0  
 
COOLING  
YESTERDAY 3 4 -1 7  
MONTH TO DATE 140 100 40 184  
SINCE SEP 1 140 100 40 184  
SINCE JAN 1 1525 1110 415 1606    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 1.1  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 9:00 PM  
LOWEST 66 10:00 AM  
AVERAGE 80  
   
......................................................
 
 
THE BALTIMORE MD CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 91 1898  
1977  
1978  
MINIMUM TEMPERATURE (F) 57 41 1990  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2020.....SUNRISE 6:51 AM EDT SUNSET 7:09 PM EDT  
SEPTEMBER 19 2020.....SUNRISE 6:52 AM EDT SUNSET 7:08 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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