216  
CDUS45 KRIW 260030  
CLILND  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
630 PM MDT MON SEP 25 2023  
   
...............................
 
 
   
..THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 25 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 80 3:04 PM 89 2015 70 10 75  
MINIMUM 42 6:11 AM 10 1926 41 1 42  
AVERAGE 61 55 6 59  
 
PRECIPITATION (IN)  
TODAY 0.00 1.66 1915 0.04 -0.04 0.00  
MONTH TO DATE 0.56 0.75 -0.19 0.95  
SINCE SEP 1 0.56 0.75 -0.19 0.95  
SINCE JAN 1 13.78 10.19 3.59 10.67  
 
SNOWFALL (IN)  
TODAY MM 0.1 MM 0.0  
MONTH TO DATE 0.0 0.9 -0.9 0.0  
SINCE SEP 1 0.0 0.9 -0.9 0.0  
SINCE JUL 1 0.0 0.9 -0.9 0.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 4 10 -6 6  
MONTH TO DATE 83 138 -55 96  
SINCE SEP 1 83 138 -55 96  
SINCE JUL 1 129 177 -48 97  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 29 31 -2 102  
SINCE SEP 1 29 31 -2 102  
SINCE JAN 1 361 483 -122 720    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 4.9  
 
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 55  
LOWEST 12  
AVERAGE 34  
   
......................................................
 
 
THE LANDER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 90 2015  
MINIMUM TEMPERATURE (F) 41 21 1934  
 
SUNRISE AND SUNSET  
SEPTEMBER 25 2023.....SUNRISE 7:05 AM MDT SUNSET 7:07 PM MDT  
SEPTEMBER 26 2023.....SUNRISE 7:06 AM MDT SUNSET 7:05 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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