568  
CDUS45 KRIW 150729  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
129 AM MDT FRI SEP 15 2023  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 14 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 67 4:18 PM 92 1948 76 -9 77  
MINIMUM 48 11:23 PM 25 1904 45 3 55  
AVERAGE 58 60 -2  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 0.74 2001 0.03 -0.02 0.24  
MONTH TO DATE 0.55 0.33 0.22 0.41  
SINCE SEP 1 0.55 0.33 0.22 0.41  
SINCE JAN 1 13.77 9.77 4.00 10.13  
 
SNOWFALL (IN)  
YESTERDAY 0.0 9.7 1982 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.2 -0.2 0.0  
SINCE SEP 1 0.0 0.2 -0.2 0.0  
SINCE JUL 1 0.0 0.2 -0.2 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 5 2 0  
MONTH TO DATE 29 53 -24 34  
SINCE SEP 1 29 53 -24 34  
SINCE JUL 1 75 92 -17 35  
 
COOLING  
YESTERDAY 0 1 -1 1  
MONTH TO DATE 24 26 -2 98  
SINCE SEP 1 24 26 -2 98  
SINCE JAN 1 356 478 -122 716    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 3.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 3:00 AM  
LOWEST 38 4:00 PM  
AVERAGE 67  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 91 2000  
MINIMUM TEMPERATURE (F) 45 28 1915  
 
SUNRISE AND SUNSET  
SEPTEMBER 15 2023.....SUNRISE 6:54 AM MDT SUNSET 7:25 PM MDT  
SEPTEMBER 16 2023.....SUNRISE 6:56 AM MDT SUNSET 7:23 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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