857  
CDUS45 KRIW 170730  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1230 AM MST TUE DEC 17 2024  
   
...............................  
 
   
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 16 2024  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1891 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 40 11:36 PM 60 1939 32 8 33  
1980  
MINIMUM 12 6:27 AM -21 1897 10 2 14  
AVERAGE 26 21 5  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.90 1908 0.01 -0.01 0.00  
MONTH TO DATE 0.00 0.34 -0.34 0.03  
SINCE DEC 1 0.00 0.34 -0.34 0.03  
SINCE JAN 1 9.19 12.94 -3.75 16.14  
 
SNOWFALL (IN)  
YESTERDAY 0.0 5.9 1967 0.3 -0.3 0.0  
MONTH TO DATE 0.0 5.0 -5.0 0.1  
SINCE DEC 1 0.0 5.0 -5.0 0.1  
SINCE JUL 1 10.3 27.6 -17.3 24.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 39 44 -5 41  
MONTH TO DATE 516 677 -161 623  
SINCE DEC 1 516 677 -161 623  
SINCE JUL 1 1945 2505 -560 2231  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 644 485 159 361    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 5.2  
 
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 56 8:00 AM  
LOWEST 28 1:00 PM  
AVERAGE 42  
   
......................................................  
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 62 1980  
MINIMUM TEMPERATURE (F) 9 -29 1924  
 
SUNRISE AND SUNSET  
DECEMBER 17 2024......SUNRISE 7:40 AM MST SUNSET 4:42 PM MST  
DECEMBER 18 2024......SUNRISE 7:41 AM MST SUNSET 4:43 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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