254  
CDUS45 KRIW 220805  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
204 AM MDT FRI SEP 22 2017  
 
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 21 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1891 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM MM MM 87 1905 70 MM 79  
MINIMUM MM MM 25 1983 42 MM 45  
AVERAGE MM 56 MM 62  
 
PRECIPITATION (IN)  
YESTERDAY MM 1.63 1895 0.04 MM T  
MONTH TO DATE 0.00 0.64 -0.64 0.58  
SINCE SEP 1 0.00 0.64 -0.64 0.58  
SINCE JAN 1 13.18 9.52 3.66 16.82  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.1 -0.1 0.0  
MONTH TO DATE 0.0 1.2 -1.2 0.0  
SINCE SEP 1 0.0 1.2 -1.2 0.0  
SINCE JUL 1 0.0 1.2 -1.2 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY MM 9 MM 3  
MONTH TO DATE MM 115 MM 110  
SINCE SEP 1 MM 115 MM 110  
SINCE JUL 1 0 155 -155 162  
 
COOLING  
YESTERDAY MM 0 MM 0  
MONTH TO DATE MM 26 MM 34  
SINCE SEP 1 MM 26 MM 34  
SINCE JAN 1 292 471 -179 562    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED MM HIGHEST WIND DIRECTION MM  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED MM  
 
 
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 MM  
LOWEST MM  
AVERAGE MM  
   
......................................................
 
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 90 1958  
MINIMUM TEMPERATURE (F) 42 7 1895  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 22 2017.....SUNRISE 703 AM MDT SUNSET 712 PM MDT  
SEPTEMBER 23 2017.....SUNRISE 704 AM MDT SUNSET 710 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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