728  
CDUS45 KRIW 070727  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT THU MAY 07 2026  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR MAY 6 2026  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 55 4:58 PM 86 1966 62 -7 38  
1992  
MINIMUM 18R 4:50 AM 20 2010 34 -16 32  
AVERAGE 37 48 -11  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.92 2016 0.07 -0.07 0.16  
MONTH TO DATE 0.07 0.39 -0.32 0.34  
SINCE MAR 1 1.51 2.64 -1.13 3.26  
SINCE JAN 1 2.05 3.69 -1.64 3.98  
 
SNOWFALL (IN)  
YESTERDAY 0.0 5.0 1975 0.1 -0.1 0.3  
MONTH TO DATE T 0.9 -0.9 0.3  
SINCE MAR 1 11.4 21.7 -10.3 16.0  
SINCE JUL 1 27.1 70.0 -42.9 26.5  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 28 17 11 30  
MONTH TO DATE 120 109 11 112  
SINCE MAR 1 1326 1698 -372 1661  
SINCE JUL 1 5503 7060 -1557 6676  
 
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 25 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 9.1  
 
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 100 2:00 AM  
LOWEST 13 5:00 PM  
AVERAGE 57  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 63 85 1992  
MINIMUM TEMPERATURE (F) 34 21 2010  
 
SUNRISE AND SUNSET  
MAY 7 2026...........SUNRISE 5:52 AM MDT SUNSET 8:14 PM MDT  
MAY 8 2026...........SUNRISE 5:51 AM MDT SUNSET 8:15 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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