683  
CDUS45 KRIW 170739  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
139 AM MDT THU APR 17 2025  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR APRIL 16 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 72 2:02 PM 80 1994 56 16 64  
MINIMUM 35 4:27 AM 14 1951 28 7 39  
AVERAGE 54 42 12  
 
PRECIPITATION (IN)  
YESTERDAY T 0.84 1976 0.04 -0.04 0.00  
MONTH TO DATE 0.29 0.67 -0.38 0.95  
SINCE MAR 1 1.62 1.51 0.11 1.52  
SINCE JAN 1 2.34 2.56 -0.22 2.55  
 
SNOWFALL (IN)  
YESTERDAY MM 10.5 2013 0.3 MM 0.0  
MONTH TO DATE 3.7 6.3 -2.6 5.0  
SINCE MAR 1 11.7 16.6 -4.9 7.7  
SINCE JUL 1 22.2 64.9 -42.7 37.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 11 23 -12 13  
MONTH TO DATE 370 386 -16 328  
SINCE MAR 1 1219 1293 -74 1221  
SINCE JUL 1 6234 6655 -421 6176  
 
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 36 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 48 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 13.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 48 11:00 PM  
LOWEST 13 12:00 PM  
AVERAGE 31  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 81 1994  
MINIMUM TEMPERATURE (F) 28 15 1945  
 
SUNRISE AND SUNSET  
APRIL 17 2025.........SUNRISE 6:20 AM MDT SUNSET 7:51 PM MDT  
APRIL 18 2025.........SUNRISE 6:19 AM MDT SUNSET 7:52 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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