765  
CDUS45 KRIW 210731  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
131 AM MDT THU OCT 21 2021  
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR OCTOBER 20 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 51 4:08 PM 77 1992 58 -7 51  
2003  
MINIMUM 30 3:40 AM 15 1949 29 1 35  
AVERAGE 41 44 -3  
 
PRECIPITATION (IN)  
YESTERDAY T 0.48 1949 0.03 -0.03 0.00  
MONTH TO DATE 2.45 0.85 1.60 0.11  
SINCE SEP 1 3.24 1.80 1.44 0.68  
SINCE JAN 1 13.17 10.63 2.54 4.89  
 
SNOWFALL (IN)  
YESTERDAY 0.3 11.5 1949 0.3 0.0 0.0  
MONTH TO DATE 17.7 4.2 13.5 T  
SINCE SEP 1 17.7 5.7 12.0 7.5  
SINCE JUL 1 17.7 5.7 12.0 7.5  
SNOW DEPTH 2  
 
DEGREE DAYS  
HEATING  
YESTERDAY 24 22 2 22  
MONTH TO DATE 334 353 -19 301  
SINCE SEP 1 458 567 -109 537  
SINCE JUL 1 481 612 -131 556  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 34 30 4 27  
SINCE JAN 1 554 442 112 542    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 11.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 12:00 AM  
LOWEST 54 4:00 PM  
AVERAGE 75  
   
......................................................
 
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 79 1992  
MINIMUM TEMPERATURE (F) 29 12 1949  
 
SUNRISE AND SUNSET  
OCTOBER 21 2021.......SUNRISE 7:27 AM MDT SUNSET 6:13 PM MDT  
OCTOBER 22 2021.......SUNRISE 7:28 AM MDT SUNSET 6:12 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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