899  
CDUS45 KRIW 140045  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
645 PM MDT WED MAY 13 2026  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR MAY 13 2026
 
 
VALID TODAY AS OF 0600 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1891 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 89R 2:02 PM 86 1988 65 24 70  
2001  
2013  
MINIMUM 45 5:06 AM 25 1933 39 6 43  
AVERAGE 67 52 15 57  
 
PRECIPITATION (IN)  
TODAY 0.00 0.71 1908 0.09 -0.09 T  
MONTH TO DATE 0.35 1.15 -0.80 1.24  
SINCE MAR 1 2.74 4.51 -1.77 6.84  
SINCE JAN 1 3.15 5.72 -2.57 7.92  
 
SNOWFALL (IN)  
TODAY MM 0.2 MM 0.0  
MONTH TO DATE 3.7 3.2 0.5 3.4  
SINCE MAR 1 21.1 34.0 -12.9 48.7  
SINCE JUL 1 29.3 86.2 -56.9 79.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 0 13 -13 8  
MONTH TO DATE 138 203 -65 138  
SINCE MAR 1 1260 1754 -494 1597  
SINCE JUL 1 5343 7405 -2062 6626  
 
COOLING  
TODAY 2 0 2 0  
MONTH TO DATE 2 0 2 4  
SINCE MAR 1 3 0 3 4  
SINCE JAN 1 3 0 3 4    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 47 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 64 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 8.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 61  
LOWEST 9  
AVERAGE 35  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 85 1936  
1987  
MINIMUM TEMPERATURE (F) 39 24 1907  
 
SUNRISE AND SUNSET  
MAY 13 2026...........SUNRISE 5:54 AM MDT SUNSET 8:29 PM MDT  
MAY 14 2026...........SUNRISE 5:53 AM MDT SUNSET 8:30 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab WY Page Main Text Page