919  
CDUS45 KRIW 190028  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
528 PM MST MON DEC 18 2023  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 18 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 33 3:29 PM 55 1954 32 1 11  
1979  
MINIMUM 17 8:20 AM -36 1924 9 8 -6  
AVERAGE 25 21 4 3  
 
PRECIPITATION (IN)  
TODAY 0.00 0.25 1973 0.02 -0.02 0.00  
MONTH TO DATE 0.03 0.38 -0.35 0.91  
SINCE DEC 1 0.03 0.38 -0.35 0.91  
SINCE JAN 1 17.04 12.98 4.06 13.51  
 
SNOWFALL (IN)  
TODAY 0.0 0.3 -0.3 0.0  
MONTH TO DATE 0.1 5.6 -5.5 9.1  
SINCE DEC 1 0.1 5.6 -5.5 9.1  
SINCE JUL 1 24.3 28.2 -3.9 23.3  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
TODAY 40 44 -4 62  
MONTH TO DATE 691 765 -74 839  
SINCE DEC 1 691 765 -74 839  
SINCE JUL 1 2299 2593 -294 2586  
 
COOLING  
TODAY 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 8 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 3.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77  
LOWEST 60  
AVERAGE 69  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 62 1917  
MINIMUM TEMPERATURE (F) 9 -40 1924  
 
SUNRISE AND SUNSET  
DECEMBER 18 2023......SUNRISE 7:41 AM MST SUNSET 4:42 PM MST  
DECEMBER 19 2023......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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