033  
CDUS45 KRIW 290730  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1230 AM MST FRI DEC 29 2023  
   
...............................  
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 28 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 29 3:13 PM 33 2002 23 6 26  
2005  
MINIMUM 0 1:06 AM -17 2009 1 -1 15  
AVERAGE 15 12 3 21  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.38 2005 0.08 -0.08 0.03  
MONTH TO DATE 1.17 2.11 -0.94 3.04  
SINCE DEC 1 1.17 2.11 -0.94 3.04  
SINCE JAN 1 27.27 22.85 4.42 27.82  
 
DEGREE DAYS  
HEATING  
YESTERDAY 50 53 -3 44  
MONTH TO DATE 1300 1453 -153 1456  
SINCE DEC 1 1300 1453 -153 1456  
SINCE JUL 1 4374 4960 -586 4676  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 5 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 6 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 0.1  
 
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 88 11:00 AM  
LOWEST 48 3:00 PM  
AVERAGE 68  
   
......................................................  
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 23 34 2004  
MINIMUM TEMPERATURE (F) 1 -16 2014  
 
SUNRISE AND SUNSET  
DECEMBER 29 2023......SUNRISE 7:58 AM MST SUNSET 4:50 PM MST  
DECEMBER 30 2023......SUNRISE 7:58 AM MST SUNSET 4:50 PM MST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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