995  
CDUS45 KRIW 140745  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
145 AM MDT THU SEP 14 2023  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 13 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1891 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 77 12:05 PM 89 2015 76 1 77  
MINIMUM 49 5:27 AM 25 1914 46 3 45  
AVERAGE 63 61 2  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 1.72 1982 0.03 0.02 T  
MONTH TO DATE 0.54 0.30 0.24 0.17  
SINCE SEP 1 0.54 0.30 0.24 0.17  
SINCE JAN 1 13.76 9.74 4.02 9.89  
 
SNOWFALL (IN)  
YESTERDAY 0.0 7.6 1982 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.2 -0.2 0.0  
SINCE SEP 1 0.0 0.2 -0.2 0.0  
SINCE JUL 1 0.0 0.2 -0.2 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 5 -3 4  
MONTH TO DATE 22 48 -26 34  
SINCE SEP 1 22 48 -26 34  
SINCE JUL 1 68 87 -19 35  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 24 25 -1 97  
SINCE SEP 1 24 25 -1 97  
SINCE JAN 1 356 477 -121 715    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 40 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 62 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 7.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 10:00 PM  
LOWEST 24 12:00 PM  
AVERAGE 57  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 92 1948  
MINIMUM TEMPERATURE (F) 45 25 1904  
 
SUNRISE AND SUNSET  
SEPTEMBER 14 2023.....SUNRISE 6:53 AM MDT SUNSET 7:27 PM MDT  
SEPTEMBER 15 2023.....SUNRISE 6:54 AM MDT SUNSET 7:25 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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