257  
CDUS45 KRIW 240736  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1236 AM MST SUN DEC 24 2023  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 23 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 36 1:38 PM 57 1901 32 4 -9  
MINIMUM 24 11:59 PM -37 1983 9 15 -28  
AVERAGE 30 20 10  
 
PRECIPITATION (IN)  
YESTERDAY 0.59R 0.52 1987 0.02 0.57 0.00  
MONTH TO DATE 0.62 0.48 0.14 1.32  
SINCE DEC 1 0.62 0.48 0.14 1.32  
SINCE JAN 1 17.63 13.08 4.55 13.92  
 
SNOWFALL (IN)  
YESTERDAY MM 9.2 1987 0.3 MM 0.0  
MONTH TO DATE 0.1 7.0 -6.9 14.8  
SINCE DEC 1 0.1 7.0 -6.9 14.8  
SINCE JUL 1 24.3 29.6 -5.3 29.0  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
YESTERDAY 35 45 -10 83  
MONTH TO DATE 852 989 -137 1166  
SINCE DEC 1 852 989 -137 1166  
SINCE JUL 1 2460 2817 -357 2913  
 
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 17 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 5.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
SNOW  
LIGHT SNOW  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 4:00 PM  
LOWEST 66 1:00 PM  
AVERAGE 79  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 55 2005  
MINIMUM TEMPERATURE (F) 9 -28 1924  
 
SUNRISE AND SUNSET  
DECEMBER 24 2023......SUNRISE 7:44 AM MST SUNSET 4:45 PM MST  
DECEMBER 25 2023......SUNRISE 7:44 AM MST SUNSET 4:46 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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