516  
CDUS45 KRIW 130045  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
645 PM MDT MON MAY 12 2025  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR MAY 12 2025  
 
VALID TODAY AS OF 0600 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 84 2:59 PM 87 1960 65 19 73  
MINIMUM 42 2:39 AM 16 1953 36 6 38  
AVERAGE 63 50 13 56  
 
PRECIPITATION (IN)  
TODAY 0.00 1.26 1989 0.07 -0.07 0.00  
MONTH TO DATE 0.18 0.83 -0.65 1.26  
SINCE MAR 1 3.10 3.08 0.02 3.05  
SINCE JAN 1 3.82 4.13 -0.31 4.08  
 
SNOWFALL (IN)  
TODAY MM 0.1 MM 0.0  
MONTH TO DATE 0.0 1.7 -1.7 3.9  
SINCE MAR 1 15.7 22.5 -6.8 13.2  
SINCE JUL 1 26.2 70.8 -44.6 42.5  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 2 15 -13 9  
MONTH TO DATE 105 204 -99 236  
SINCE MAR 1 1654 1793 -139 1762  
SINCE JUL 1 6669 7155 -486 6717  
 
COOLING  
TODAY 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 33 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 48 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 15.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79  
LOWEST 13  
AVERAGE 46  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 88 2013  
MINIMUM TEMPERATURE (F) 36 22 1983  
 
SUNRISE AND SUNSET  
MAY 12 2025...........SUNRISE 5:46 AM MDT SUNSET 8:19 PM MDT  
MAY 13 2025...........SUNRISE 5:45 AM MDT SUNSET 8:20 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab WY Page
Main Text Page