CDUS45 KRIW 180733
CLIRKS

CLIMATE REPORT 
NATIONAL WEATHER SERVICE RIVERTON WY
133 AM MDT MON MAY 18 2026

...................................

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR MAY 17 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         46  12:00 AM  82    1973  64    -18       65        
  MINIMUM         32        MM  26    1986  39     -7       35        
  AVERAGE         39                        51    -12              

PRECIPITATION (IN)                                                    
  YESTERDAY        0.05          1.05 1962   0.04   0.01      T       
  MONTH TO DATE    0.13                      0.71  -0.58     0.23     
  SINCE MAR 1      1.41                      2.20  -0.79     1.94     
  SINCE JAN 1      1.57                      2.95  -1.38     2.20     

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       26                        14     12       15        
  MONTH TO DATE  222                       285    -63      220        
  SINCE MAR 1   1484                      1958   -474     1651        
  SINCE JUL 1   5866                      7748  -1882     6872        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    2                         0      2        1        
  SINCE MAR 1      2                         0      2        1        
  SINCE JAN 1      2                         0      2        1        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION    NE (60)        
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION    NE (60)        
  AVERAGE WIND SPEED    11.2                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.6                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  LIGHT RAIN                                                          
  LIGHT SNOW                                                          
  FOG                                                                 


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           9:00 PM                                      
 LOWEST     32          10:00 AM                                      
 AVERAGE    62                                                        

..........................................................


THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   64        83      1970                      
 MINIMUM TEMPERATURE (F)   39        28      1971                      
                                             2017                     


SUNRISE AND SUNSET                                                    
MAY 18 2026...........SUNRISE   5:54 AM MDT   SUNSET   8:32 PM MDT     
MAY 19 2026...........SUNRISE   5:53 AM MDT   SUNSET   8:33 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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