668  
CDUS45 KRIW 220739  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1239 AM MST FRI DEC 22 2023  
   
...............................  
 
   
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 21 2023  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1891 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 47 3:40 PM 61 1969 32 15 36  
MINIMUM 24 6:30 AM -35 1990 9 15 -18  
AVERAGE 36 20 16  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.68 2011 0.02 -0.02 0.41  
MONTH TO DATE 0.03 0.44 -0.41 1.32  
SINCE DEC 1 0.03 0.44 -0.41 1.32  
SINCE JAN 1 17.04 13.04 4.00 13.92  
 
SNOWFALL (IN)  
YESTERDAY 0.0 8.4 2011 0.3 -0.3 5.7  
MONTH TO DATE 0.1 6.4 -6.3 14.8  
SINCE DEC 1 0.1 6.4 -6.3 14.8  
SINCE JUL 1 24.3 29.0 -4.7 29.0  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
YESTERDAY 29 45 -16 56  
MONTH TO DATE 787 899 -112 996  
SINCE DEC 1 787 899 -112 996  
SINCE JUL 1 2395 2727 -332 2743  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 361 485 -124 720    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 4.4  
 
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 82 1:00 AM  
LOWEST 51 3:00 PM  
AVERAGE 67  
   
......................................................  
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 58 1917  
MINIMUM TEMPERATURE (F) 9 -35 1990  
 
SUNRISE AND SUNSET  
DECEMBER 22 2023......SUNRISE 7:43 AM MST SUNSET 4:44 PM MST  
DECEMBER 23 2023......SUNRISE 7:43 AM MST SUNSET 4:45 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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