773  
CDUS45 KRIW 160727  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT SAT SEP 16 2023  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 15 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 74 3:12 PM 91 2000 75 -1 62  
MINIMUM 44 6:02 AM 28 1915 45 -1 51  
AVERAGE 59 60 -1  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.50 2022 0.03 -0.03 0.50  
MONTH TO DATE 0.55 0.36 0.19 0.91  
SINCE SEP 1 0.55 0.36 0.19 0.91  
SINCE JAN 1 13.77 9.80 3.97 10.63  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.7 1965 0.1 -0.1 0.0  
MONTH TO DATE 0.0 0.3 -0.3 0.0  
SINCE SEP 1 0.0 0.3 -0.3 0.0  
SINCE JUL 1 0.0 0.3 -0.3 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 6 0 8  
MONTH TO DATE 35 59 -24 42  
SINCE SEP 1 35 59 -24 42  
SINCE JUL 1 81 98 -17 43  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 24 27 -3 98  
SINCE SEP 1 24 27 -3 98  
SINCE JAN 1 356 479 -123 716    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 3.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 3:00 AM  
LOWEST 25 3:00 PM  
AVERAGE 54  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 91 2000  
MINIMUM TEMPERATURE (F) 45 23 1965  
 
SUNRISE AND SUNSET  
SEPTEMBER 16 2023.....SUNRISE 6:56 AM MDT SUNSET 7:23 PM MDT  
SEPTEMBER 17 2023.....SUNRISE 6:57 AM MDT SUNSET 7:21 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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