135  
CDUS45 KRIW 120733  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
133 AM MDT TUE SEP 12 2023  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 11 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 76 2:58 PM 88 1919 77 -1 81  
1990  
MINIMUM 43 6:18 AM 26 1898 46 -3 40  
AVERAGE 60 62 -2  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.31 1903 0.03 -0.03 0.00  
MONTH TO DATE 0.49 0.24 0.25 0.17  
SINCE SEP 1 0.49 0.24 0.25 0.17  
SINCE JAN 1 13.71 9.68 4.03 9.89  
 
SNOWFALL (IN)  
YESTERDAY 0.0 3.0 1974 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE SEP 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 0.0 0.1 -0.1 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 5 5 0 4  
MONTH TO DATE 20 38 -18 30  
SINCE SEP 1 20 38 -18 30  
SINCE JUL 1 66 77 -11 31  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 24 23 1 94  
SINCE SEP 1 24 23 1 94  
SINCE JAN 1 356 475 -119 712    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 4.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 4:00 AM  
LOWEST 24 4:00 PM  
AVERAGE 55  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 94 1990  
MINIMUM TEMPERATURE (F) 46 26 1902  
 
SUNRISE AND SUNSET  
SEPTEMBER 12 2023.....SUNRISE 6:51 AM MDT SUNSET 7:30 PM MDT  
SEPTEMBER 13 2023.....SUNRISE 6:52 AM MDT SUNSET 7:29 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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