907  
CDUS45 KRIW 100727  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT FRI OCT 10 2025  
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR OCTOBER 9 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 78 3:24 PM 83 2003 63 15 80  
MINIMUM 41 3:14 AM 12 2009 33 8 37  
AVERAGE 60 48 12  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.51 2005 0.04 -0.04 0.00  
MONTH TO DATE 0.66 0.40 0.26 0.00  
SINCE SEP 1 3.21 1.35 1.86 0.24  
SINCE JAN 1 10.52 10.18 0.34 7.22  
 
SNOWFALL (IN)  
YESTERDAY 0.0 5.2 2009 0.2 -0.2 0.0  
MONTH TO DATE 0.0 1.7 -1.7 0.0  
SINCE SEP 1 0.0 3.2 -3.2 0.0  
SINCE JUL 1 0.0 3.2 -3.2 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 5 17 -12 6  
MONTH TO DATE 113 137 -24 87  
SINCE SEP 1 226 351 -125 189  
SINCE JUL 1 236 396 -160 227  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 17 30 -13 63  
SINCE JAN 1 467 442 25 538    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 10.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 8:00 PM  
LOWEST 20 2:00 PM  
AVERAGE 45  
   
......................................................
 
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 85 2015  
MINIMUM TEMPERATURE (F) 33 11 2009  
 
SUNRISE AND SUNSET  
OCTOBER 10 2025.......SUNRISE 7:14 AM MDT SUNSET 6:31 PM MDT  
OCTOBER 11 2025.......SUNRISE 7:15 AM MDT SUNSET 6:29 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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