420  
CDUS45 KRIW 290027  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
627 PM MDT THU SEP 28 2023  
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 28 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 73 1:49 PM 92 2010 69 4 83  
MINIMUM 44 6:09 AM 15 1945 38 6 45  
AVERAGE 59 53 6 64  
 
PRECIPITATION (IN)  
TODAY 0.00 0.34 2019 0.04 -0.04 0.00  
MONTH TO DATE 0.59 0.87 -0.28 0.75  
SINCE SEP 1 0.59 0.87 -0.28 0.75  
SINCE JAN 1 13.07 9.70 3.37 11.14  
 
SNOWFALL (IN)  
TODAY 0.0 0.1 -0.1 0.0  
MONTH TO DATE 0.0 1.3 -1.3 0.0  
SINCE SEP 1 0.0 1.3 -1.3 0.0  
SINCE JUL 1 0.0 1.3 -1.3 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 6 12 -6 1  
MONTH TO DATE 115 188 -73 137  
SINCE SEP 1 115 188 -73 137  
SINCE JUL 1 168 233 -65 139  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 20 29 -9 68  
SINCE SEP 1 20 29 -9 68  
SINCE JAN 1 342 441 -99 544    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 9.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80  
LOWEST 22  
AVERAGE 51  
   
......................................................
 
 
THE CASPER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 86 2009  
MINIMUM TEMPERATURE (F) 37 18 1984  
 
SUNRISE AND SUNSET  
SEPTEMBER 28 2023.....SUNRISE 7:00 AM MDT SUNSET 6:53 PM MDT  
SEPTEMBER 29 2023.....SUNRISE 7:01 AM MDT SUNSET 6:51 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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