950  
CDUS45 KRIW 050735  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
135 AM MDT FRI SEP 05 2025  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 4 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1891 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 83 2:12 PM 99 2022 80 3 72  
MINIMUM 53 7:03 AM 30 1894 49 4 52  
AVERAGE 68 64 4  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.42 2023 0.02 -0.02 0.05  
MONTH TO DATE 0.00 0.07 -0.07 0.31  
SINCE SEP 1 0.00 0.07 -0.07 0.31  
SINCE JAN 1 10.01 9.51 0.50 7.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2020 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 3 -3 3  
MONTH TO DATE 0 11 -11 3  
SINCE SEP 1 0 11 -11 3  
SINCE JUL 1 5 50 -45 21  
 
COOLING  
YESTERDAY 3 2 1 0  
MONTH TO DATE 20 10 10 25  
SINCE SEP 1 20 10 10 25  
SINCE JAN 1 547 462 85 586    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 5.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 57 11:00 PM  
LOWEST 18 3:00 PM  
AVERAGE 38  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 96 2020  
2022  
MINIMUM TEMPERATURE (F) 49 31 1910  
 
SUNRISE AND SUNSET  
SEPTEMBER 5 2025.....SUNRISE 6:44 AM MDT SUNSET 7:42 PM MDT  
SEPTEMBER 6 2025.....SUNRISE 6:45 AM MDT SUNSET 7:40 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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