148  
CDUS45 KRIW 100731  
CLIBPI  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
131 AM MDT WED SEP 10 2025  
   
...............................  
 
   
..THE BIG PINEY WY CLIMATE SUMMARY FOR SEPTEMBER 9 2025  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1976 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 75 2:02 PM 88 2021 73 2 82  
MINIMUM 40 3:01 AM 11 1976 34 6 39  
AVERAGE 58 53 5  
 
PRECIPITATION (IN)  
YESTERDAY T 0.27 2005 0.02 -0.02 0.00  
MONTH TO DATE 0.09 0.18 -0.09 0.16  
SINCE SEP 1 0.09 0.18 -0.09 0.16  
SINCE JAN 1 5.95 6.09 -0.14 3.19  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 12 -5 4  
MONTH TO DATE 52 95 -43 60  
SINCE SEP 1 52 95 -43 60  
SINCE JUL 1 226 371 -145 272  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JAN 1 41 30 11 64    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 6.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 3:00 AM  
LOWEST 24 2:00 PM  
AVERAGE 54  
   
......................................................  
 
THE BIG PINEY WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 82 2018  
MINIMUM TEMPERATURE (F) 34 15 2020  
 
SUNRISE AND SUNSET  
SEPTEMBER 10 2025.....SUNRISE 6:55 AM MDT SUNSET 7:38 PM MDT  
SEPTEMBER 11 2025.....SUNRISE 6:56 AM MDT SUNSET 7:37 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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