CDUS45 KRIW 190046
CLICPR

CLIMATE REPORT 
NATIONAL WEATHER SERVICE RIVERTON WY
646 PM MDT MON MAY 18 2026

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

...THE CASPER WY CLIMATE SUMMARY FOR MAY 18 2026...
VALID TODAY AS OF 0600 PM LOCAL TIME.

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 TODAY                                                               
  MAXIMUM         38   2:43 PM  88    1992  68    -30       64        
                                      2009                           
  MINIMUM         32  11:29 AM  25    1943  38     -6       43        
  AVERAGE         35                        53    -18       54     

PRECIPITATION (IN)                                                    
  TODAY            0.57          1.19 1978   0.08   0.49     0.08     
  MONTH TO DATE    1.03                      1.29  -0.26     0.49     
  SINCE MAR 1      2.47                      3.54  -1.07     3.41     
  SINCE JAN 1      3.01                      4.59  -1.58     4.13     

SNOWFALL (IN)                                                              
  TODAY           MM                         0.1   MM        0.0      
  MONTH TO DATE    T                         2.2   -2.2      0.3      
  SINCE MAR 1     11.4                      23.0  -11.6     16.0      
  SINCE JUL 1     27.1                      71.3  -44.2     26.5      
  SNOW DEPTH      MM                                                  

DEGREE DAYS                                                           
 HEATING                                                              
  TODAY           30                        12     18       11        
  MONTH TO DATE  245                       283    -38      226        
  SINCE MAR 1   1451                      1872   -421     1775        
  SINCE JUL 1   5628                      7234  -1606     6790        

 COOLING                                                              
  TODAY            0                         0      0        0        
  MONTH TO DATE    0                         0      0        0        
  SINCE MAR 1      0                         0      0        0        
  SINCE JAN 1      0                         0      0        0        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    31   HIGHEST WIND DIRECTION    NE (30)        
  HIGHEST GUST SPEED    38   HIGHEST GUST DIRECTION    NE (30)        
  AVERAGE WIND SPEED    18.0                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 1.0                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED TODAY.                             
  RAIN                                                                
  LIGHT RAIN                                                          
  SNOW                                                                
  LIGHT SNOW                                                          
  FOG                                                                 
  HAZE                                                                


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100                                                        
 LOWEST     75                                                        
 AVERAGE    88                                                        

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


THE CASPER WY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   68        89      1992                      
                                             2009                     
 MINIMUM TEMPERATURE (F)   38        27      1966                      
                                             1968                     


SUNRISE AND SUNSET                                                    
MAY 18 2026...........SUNRISE   5:40 AM MDT   SUNSET   8:25 PM MDT     
MAY 19 2026...........SUNRISE   5:39 AM MDT   SUNSET   8:26 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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