241  
CDUS45 KRIW 200834  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
231 AM MDT SUN OCT 20 2019  
 
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR OCTOBER 19 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1998 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 30 423 PM 62 2003 47 -17 54  
MINIMUM 21 133 AM 14 1999 22 -1 22  
AVERAGE 26 35 -9 38  
 
PRECIPITATION (IN)  
YESTERDAY 0.70R 0.43 2015 0.04 0.66 0.00  
MONTH TO DATE 1.48 0.76 0.72 1.24  
SINCE SEP 1 4.54 2.06 2.48 1.45  
SINCE JAN 1 18.89 16.13 2.76 21.41  
 
DEGREE DAYS  
HEATING  
YESTERDAY 39 30 9 27  
MONTH TO DATE 663 516 147 618  
SINCE SEP 1 1251 1064 187 1172  
SINCE JUL 1 1848 1651 197 1768  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 4.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
SNOW  
LIGHT SNOW  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 200 PM  
LOWEST 72 1200 PM  
AVERAGE 86  
   
......................................................
 
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 46 63 2003  
MINIMUM TEMPERATURE (F) 22 14 2007  
 
 
SUNRISE AND SUNSET  
OCTOBER 20 2019.......SUNRISE 743 AM MDT SUNSET 629 PM MDT  
OCTOBER 21 2019.......SUNRISE 744 AM MDT SUNSET 628 PM MDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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