580  
CDUS45 KRIW 120730  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
130 AM MDT THU SEP 12 2024  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 11 2024  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 85 2:09 PM 91 1993 78 7 75  
MINIMUM 56 5:51 AM 26 2014 44 12 38  
AVERAGE 71 61 10  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 0.63 1973 0.03 -0.01 0.00  
MONTH TO DATE 0.17 0.27 -0.10 0.31  
SINCE SEP 1 0.17 0.27 -0.10 0.31  
SINCE JAN 1 7.15 9.10 -1.95 12.52  
 
SNOWFALL (IN)  
YESTERDAY 0.0 3.0 1974 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 0 5 -5 8  
MONTH TO DATE 7 43 -36 24  
SINCE SEP 1 7 43 -36 24  
SINCE JUL 1 45 88 -43 77  
 
COOLING  
YESTERDAY 6 1 5 0  
MONTH TO DATE 51 21 30 19  
SINCE SEP 1 51 21 30 19  
SINCE JAN 1 526 433 93 341    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 10.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 51 6:00 AM  
LOWEST 20 2:00 PM  
AVERAGE 36  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 94 1990  
MINIMUM TEMPERATURE (F) 44 25 2014  
 
SUNRISE AND SUNSET  
SEPTEMBER 12 2024.....SUNRISE 6:43 AM MDT SUNSET 7:20 PM MDT  
SEPTEMBER 13 2024.....SUNRISE 6:44 AM MDT SUNSET 7:18 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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