443  
CDUS43 KBIS 210737  
CLIISN  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BISMARCK ND  
237 AM CDT TUE MAY 21 2019  
 
   
...............................
 
 
   
..THE WILLISTON ND CLIMATE SUMMARY FOR MAY 20 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1894 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 65 325 PM 98 1964 69 -4 73  
MINIMUM 32 501 AM 23 1997 42 -10 31  
AVERAGE 49 55 -6 52  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.00 1896 0.07 -0.07 0.00  
MONTH TO DATE 0.79 1.13 -0.34 0.30  
SINCE MAR 1 1.52 2.84 -1.32 2.54  
SINCE JAN 1 3.45 3.82 -0.37 3.11  
 
DEGREE DAYS  
HEATING  
YESTERDAY 16 10 6 13  
MONTH TO DATE 328 257 71 174  
SINCE MAR 1 2244 2014 230 2308  
SINCE JUL 1 9229 8782 447 9162  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 6  
SINCE MAR 1 0 1 -1 6  
SINCE JAN 1 0 1 -1 6    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 9.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 500 AM  
LOWEST 25 200 PM  
AVERAGE 54  
   
......................................................
 
 
 
THE WILLISTON ND CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 102 1980  
MINIMUM TEMPERATURE (F) 42 26 2009  
1931  
 
 
SUNRISE AND SUNSET  
MAY 21 2019...........SUNRISE 608 AM CDT SUNSET 935 PM CDT  
MAY 22 2019...........SUNRISE 607 AM CDT SUNSET 936 PM CDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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