322  
CDUS45 KRIW 240057  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
656 PM MDT SUN SEP 23 2018  
 
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 23 2018
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1998 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 58 MM 73 2011 59 -1 42  
MINIMUM 34 MM 18 2000 29 5 29  
AVERAGE 46  
 
PRECIPITATION (IN)  
TODAY 0.00 0.37 2016 0.03 -0.03 0.00  
MONTH TO DATE 0.17 1.07 -0.90 3.31  
SINCE SEP 1 0.17 1.07 -0.90 3.31  
SINCE JAN 1 20.13 15.14 4.99 25.61  
 
DEGREE DAYS  
HEATING  
TODAY 19 21 -2 29  
MONTH TO DATE 384 390 -6 407  
SINCE SEP 1 384 390 -6 407  
SINCE JUL 1 980 977 3 960  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 3.7  
 
 
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 69 700 AM  
LOWEST 24 1100 AM  
AVERAGE 47  
   
......................................................
 
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 74 2011  
2009  
MINIMUM TEMPERATURE (F) 29 13 2000  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 23 2018.....SUNRISE 710 AM MDT SUNSET 717 PM MDT  
SEPTEMBER 24 2018.....SUNRISE 711 AM MDT SUNSET 715 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