641  
CDUS45 KRIW 210749  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1249 AM MST THU DEC 21 2023  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 20 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 42 1:16 PM 55 1917 32 10 26  
MINIMUM 25 1:54 AM -37 1924 9 16 8  
AVERAGE 34 20 14  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.35 1920 0.02 -0.02 0.00  
MONTH TO DATE 0.03 0.42 -0.39 0.91  
SINCE DEC 1 0.03 0.42 -0.39 0.91  
SINCE JAN 1 17.04 13.02 4.02 13.51  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.3 1968 0.2 -0.2 0.0  
MONTH TO DATE 0.1 6.1 -6.0 9.1  
SINCE DEC 1 0.1 6.1 -6.0 9.1  
SINCE JUL 1 24.3 28.7 -4.4 23.3  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
YESTERDAY 31 45 -14 48  
MONTH TO DATE 758 854 -96 940  
SINCE DEC 1 758 854 -96 940  
SINCE JUL 1 2366 2682 -316 2687  
 
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 9 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 3.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 11:00 PM  
LOWEST 57 1:00 PM  
AVERAGE 70  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 61 1969  
MINIMUM TEMPERATURE (F) 9 -35 1990  
 
SUNRISE AND SUNSET  
DECEMBER 21 2023......SUNRISE 7:42 AM MST SUNSET 4:44 PM MST  
DECEMBER 22 2023......SUNRISE 7:43 AM MST SUNSET 4:44 PM MST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab WY Page Main Text Page