138  
CDUS45 KRIW 210747  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
147 AM MDT TUE MAY 21 2024  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR MAY 20 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 44 1:29 PM 66 2002 52 -8 63  
MINIMUM 22 5:31 AM 17 2003 28 -6 27  
AVERAGE 33 40 -7 45  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.28 2005 0.08 -0.08 0.00  
MONTH TO DATE 1.08 1.39 -0.31 0.95  
SINCE MAR 1 6.41 5.57 0.84 6.88  
SINCE JAN 1 10.88 9.07 1.81 10.09  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 25 7 20  
MONTH TO DATE 488 564 -76 492  
SINCE MAR 1 2640 3010 -370 3283  
SINCE JUL 1 10114 11214 -1100 11256  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 3.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 10:00 PM  
LOWEST 30 11:00 AM  
AVERAGE 54  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 52 68 2012  
MINIMUM TEMPERATURE (F) 28 17 2001  
 
SUNRISE AND SUNSET  
MAY 21 2024...........SUNRISE 5:47 AM MDT SUNSET 8:50 PM MDT  
MAY 22 2024...........SUNRISE 5:46 AM MDT SUNSET 8:51 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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