110  
CDUS45 KRIW 190732  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
132 AM MDT THU JUN 19 2025  
   
...............................  
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR JUNE 18 2025  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 70 4:40 PM 77 2021 62 8 44  
MINIMUM 36 5:09 AM 25 2010 33 3 26  
AVERAGE 53 48 5 35  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 0.72 2023 0.07 -0.06 0.03  
MONTH TO DATE 0.15 1.64 -1.49 0.73  
SINCE JUN 1 0.15 1.64 -1.49 0.73  
SINCE JAN 1 9.38 11.67 -2.29 12.93  
 
DEGREE DAYS  
HEATING  
YESTERDAY 12 17 -5 30  
MONTH TO DATE 259 356 -97 287  
SINCE JUN 1 259 356 -97 287  
SINCE JUL 1 9091 11829 -2738 10689  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 2.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 5:00 AM  
LOWEST 19 12:00 PM  
AVERAGE 58  
   
......................................................  
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 74 2021  
MINIMUM TEMPERATURE (F) 34 23 2024  
 
SUNRISE AND SUNSET  
JUNE 19 2025..........SUNRISE 5:36 AM MDT SUNSET 9:10 PM MDT  
JUNE 20 2025..........SUNRISE 5:37 AM MDT SUNSET 9:10 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