502  
CDUS45 KRIW 130728  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT SAT MAY 13 2023  
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR MAY 12 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 53 4:39 PM 87 1960 65 -12 54  
MINIMUM 45 6:37 AM 16 1953 36 9 34  
AVERAGE 49 50 -1  
 
PRECIPITATION (IN)  
YESTERDAY 0.17 1.26 1989 0.07 0.10 T  
MONTH TO DATE 0.64 0.83 -0.19 0.54  
SINCE MAR 1 2.78 3.08 -0.30 4.06  
SINCE JAN 1 5.46 4.13 1.33 5.81  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.3 1980 0.1 -0.1 0.0  
MONTH TO DATE 0.0 1.7 -1.7 0.2  
SINCE MAR 1 48.3 22.5 25.8 39.4  
SINCE JUL 1 134.3 70.8 63.5 98.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 16 15 1 21  
MONTH TO DATE 160 204 -44 215  
SINCE MAR 1 2102 1793 309 2015  
SINCE JUL 1 7803 7155 648 6874  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 12.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 4:00 AM  
LOWEST 71 4:00 PM  
AVERAGE 82  
   
......................................................
 
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 88 2013  
MINIMUM TEMPERATURE (F) 36 22 1983  
 
SUNRISE AND SUNSET  
MAY 13 2023...........SUNRISE 5:45 AM MDT SUNSET 8:20 PM MDT  
MAY 14 2023...........SUNRISE 5:44 AM MDT SUNSET 8:21 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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