674  
CDUS45 KRIW 020727  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT MON OCT 02 2023  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR OCTOBER 1 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 56 8:53 AM 72 2011 53 3 47  
MINIMUM 28 11:59 PM 22 2002 27 1 30  
2021  
AVERAGE 42 40 2 39  
 
PRECIPITATION (IN)  
YESTERDAY 0.07 0.80 2000 0.05 0.02 0.22  
MONTH TO DATE 0.07 0.05 0.02 0.22  
SINCE SEP 1 3.69 1.62 2.07 1.84  
SINCE JAN 1 21.72 16.88 4.84 19.85  
 
DEGREE DAYS  
HEATING  
YESTERDAY 23 25 -2 26  
MONTH TO DATE 23 25 -2 26  
SINCE SEP 1 519 613 -94 481  
SINCE JUL 1 1052 1255 -203 925  
 
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 12 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 2.3  
 
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 92 10:00 PM  
LOWEST 47 9:00 AM  
AVERAGE 70  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 52 74 2010  
MINIMUM TEMPERATURE (F) 26 16 2009  
 
SUNRISE AND SUNSET  
OCTOBER 2 2023.......SUNRISE 7:21 AM MDT SUNSET 7:01 PM MDT  
OCTOBER 3 2023.......SUNRISE 7:22 AM MDT SUNSET 6:59 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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