051  
CDUS45 KRIW 200726  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
126 AM MDT WED AUG 20 2025  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR AUGUST 19 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 97R 3:19 PM 96 2013 85 12 93  
MINIMUM 56 5:56 AM 38 1912 53 3 63  
AVERAGE 77 69 8  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.00 1979 0.02 -0.02 0.00  
MONTH TO DATE 0.05 0.34 -0.29 0.45  
SINCE JUN 1 1.03 2.01 -0.98 0.87  
SINCE JAN 1 9.59 9.26 0.33 6.73  
 
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 JUN 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 2 5 -3 1  
SINCE JUN 1 92 143 -51 42  
SINCE JUL 1 4 19 -15 7  
 
COOLING  
YESTERDAY 12 5 7 13  
MONTH TO DATE 140 127 13 135  
SINCE JUN 1 464 400 64 500  
SINCE JAN 1 472 405 67 500    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 7.4  
 
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 34 6:00 AM  
LOWEST 7 7:00 PM  
AVERAGE 21  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 94 2003  
2019  
2024  
MINIMUM TEMPERATURE (F) 53 38 1964  
 
SUNRISE AND SUNSET  
AUGUST 20 2025........SUNRISE 6:27 AM MDT SUNSET 8:09 PM MDT  
AUGUST 21 2025........SUNRISE 6:28 AM MDT SUNSET 8:07 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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