221  
CDUS45 KRIW 230729  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
129 AM MDT TUE MAY 23 2023  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR MAY 22 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 64R 1:30 PM 64 2001 53 11 41  
MINIMUM 30 5:07 AM 22 2022 28 2 22  
AVERAGE 47 40 7 32  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.70 2004 0.08 -0.08 0.24  
MONTH TO DATE 0.95 1.55 -0.60 2.34  
SINCE MAR 1 6.88 5.73 1.15 6.97  
SINCE JAN 1 10.09 9.23 0.86 9.43  
 
DEGREE DAYS  
HEATING  
YESTERDAY 18 25 -7 33  
MONTH TO DATE 527 614 -87 671  
SINCE MAR 1 3318 3060 258 3118  
SINCE JUL 1 11293 11264 29 10826  
 
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 16 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 1.4  
 
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 96 4:00 AM  
LOWEST 35 1:00 PM  
AVERAGE 66  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 53 69 2001  
MINIMUM TEMPERATURE (F) 29 20 2022  
 
SUNRISE AND SUNSET  
MAY 23 2023...........SUNRISE 5:46 AM MDT SUNSET 8:51 PM MDT  
MAY 24 2023...........SUNRISE 5:45 AM MDT SUNSET 8:52 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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