260  
CDUS45 KRIW 130745  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1245 AM MST WED DEC 13 2023  
   
...............................  
 
   
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 12 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 32 2:43 PM 57 1924 33 -1 32  
1929  
1995  
MINIMUM 18 10:43 PM -28 1932 10 8 17  
AVERAGE 25 22 3  
 
PRECIPITATION (IN)  
YESTERDAY T 0.55 1926 0.02 -0.02 0.49  
MONTH TO DATE 0.03 0.27 -0.24 0.49  
SINCE DEC 1 0.03 0.27 -0.24 0.49  
SINCE JAN 1 17.04 12.87 4.17 13.09  
 
SNOWFALL (IN)  
YESTERDAY T 5.5 1992 0.3 -0.3 5.4  
MONTH TO DATE 0.1 3.9 -3.8 5.4  
SINCE DEC 1 0.1 3.9 -3.8 5.4  
SINCE JUL 1 24.3 26.5 -2.2 19.6  
SNOW DEPTH 2  
 
DEGREE DAYS  
HEATING  
YESTERDAY 40 43 -3 40  
MONTH TO DATE 444 501 -57 509  
SINCE DEC 1 444 501 -57 509  
SINCE JUL 1 2052 2329 -277 2256  
 
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 10 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 3.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 12:00 PM  
LOWEST 77 10:00 PM  
AVERAGE 85  
   
......................................................  
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 33 60 1921  
MINIMUM TEMPERATURE (F) 10 -23 1926  
1932  
 
SUNRISE AND SUNSET  
DECEMBER 13 2023......SUNRISE 7:37 AM MST SUNSET 4:41 PM MST  
DECEMBER 14 2023......SUNRISE 7:38 AM MST SUNSET 4:41 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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