438  
CDUS45 KRIW 210245  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
842 PM MDT FRI SEP 20 2019  
 
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 20 2019
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1939 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 73 MM 89 1956 72 1 70  
MINIMUM 43 MM 16 1983 40 3 38  
AVERAGE 58 56 2 54  
 
PRECIPITATION (IN)  
TODAY 0.01 2.01 1989 0.04 -0.03 0.01  
MONTH TO DATE 0.51 0.67 -0.16 0.03  
SINCE SEP 1 0.51 0.67 -0.16 0.03  
SINCE JAN 1 9.80 9.75 0.05 9.80  
 
SNOWFALL (IN)  
TODAY 0.0 0.1 -0.1 0.0  
MONTH TO DATE 0.0 0.7 -0.7 0.0  
SINCE SEP 1 0.0 0.7 -0.7 0.0  
SINCE JUL 1 0.0 0.7 -0.7 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 7 10 -3 11  
MONTH TO DATE 58 119 -61 32  
SINCE SEP 1 58 119 -61 32  
SINCE JUL 1 74 165 -91 68  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 58 24 34 18  
SINCE SEP 1 58 24 34 18  
SINCE JAN 1 441 421 20 422    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 8.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 400 AM  
LOWEST 40 100 PM  
AVERAGE 67  
   
......................................................
 
 
 
THE CASPER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 85 1966  
MINIMUM TEMPERATURE (F) 39 21 1983  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2019.....SUNRISE 651 AM MDT SUNSET 707 PM MDT  
SEPTEMBER 21 2019.....SUNRISE 652 AM MDT SUNSET 705 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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