348  
CDUS45 KRIW 190727  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT SUN OCT 19 2025  
   
...............................  
 
   
..THE LANDER WY CLIMATE SUMMARY FOR OCTOBER 18 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 51 4:04 PM 80 1958 58 -7 41  
MINIMUM 33 8:25 AM 9 1917 31 2 32  
AVERAGE 42 44 -2  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 0.74 1932 0.05 -0.04 0.49  
MONTH TO DATE 1.45 0.92 0.53 0.51  
SINCE SEP 1 2.65 1.90 0.75 0.91  
SINCE JAN 1 12.66 11.34 1.32 7.93  
 
SNOWFALL (IN)  
YESTERDAY MM 4.5 1949 0.4 MM T  
MONTH TO DATE T 5.7 -5.7 T  
SINCE SEP 1 T 7.2 -7.2 T  
SINCE JUL 1 T 7.2 -7.2 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 23 21 2 28  
MONTH TO DATE 263 302 -39 127  
SINCE SEP 1 362 497 -135 211  
SINCE JUL 1 367 536 -169 229  
 
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 15 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 5.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 8:00 AM  
LOWEST 41 4:00 PM  
AVERAGE 71  
   
......................................................  
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 77 1947  
2023  
MINIMUM TEMPERATURE (F) 31 7 1916  
 
SUNRISE AND SUNSET  
OCTOBER 19 2025.......SUNRISE 7:33 AM MDT SUNSET 6:25 PM MDT  
OCTOBER 20 2025.......SUNRISE 7:35 AM MDT SUNSET 6:24 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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