428  
CDUS45 KRIW 180728  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT SAT OCT 18 2025  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR OCTOBER 17 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 60 3:28 PM 76 1926 58 2 61  
1974  
2023  
MINIMUM 32 5:05 AM 9 1925 32 0 41  
AVERAGE 46 45 1  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.03 1994 0.05 -0.05 0.02  
MONTH TO DATE 1.44 0.87 0.57 0.02  
SINCE SEP 1 2.64 1.85 0.79 0.42  
SINCE JAN 1 12.65 11.29 1.36 7.44  
 
SNOWFALL (IN)  
YESTERDAY 0.0 3.6 1994 0.4 -0.4 0.0  
MONTH TO DATE T 5.3 -5.3 0.0  
SINCE SEP 1 T 6.8 -6.8 0.0  
SINCE JUL 1 T 6.8 -6.8 0.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 19 20 -1 14  
MONTH TO DATE 240 281 -41 99  
SINCE SEP 1 339 476 -137 183  
SINCE JUL 1 344 515 -171 201  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 42 32 10 83  
SINCE JAN 1 569 484 85 644    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 4.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 1:00 AM  
LOWEST 33 3:00 PM  
AVERAGE 65  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 80 1958  
MINIMUM TEMPERATURE (F) 31 9 1917  
 
SUNRISE AND SUNSET  
OCTOBER 18 2025.......SUNRISE 7:32 AM MDT SUNSET 6:27 PM MDT  
OCTOBER 19 2025.......SUNRISE 7:33 AM MDT SUNSET 6:25 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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