Mean Percent of Possible Sunshine - Western Regional Climate Center (WRCC)
Only the first order stations record possible sunshine.

For more information click here on Western States, Alaska  or Hawaii and Pacific Islands

Click on a State: Arizona, California, Colorado, Hawaii & Pacific Islands, Idaho, Montana,
Nevada, New Mexico, Oregon, Utah, Washington, Wyoming

                        MEAN MONTHLY AND ANNUAL PERCENT OF POSSIBLE SUNSHINE


                    JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC   ANNUAL
ALASKA

ANCHORAGE            34   42   50   50   50   46   43   39   39   36   32   27     41
ANNETTE              
BARROW                
BETHEL                
BETTLES      (5)      
BIG DELTA             
COLD BAY              
FAIRBANKS             
GULKANA      (5)      
HOMER                 
JUNEAU               32   32   37   39   39   34   31   32   26   19   23   20     30
KING SALMON           
KODIAK                
KOTZEBUE              
MCGRATH               
NOME                 40   55   54   54   50   43   37   32   36   34   31   34     42
ST. PAUL ISLAND       
TALKEETNA             
VALDEZ                
YAKUTAT               


ARIZONA

FLAGSTAFF            77   73   76   82   88   86   75   76   81   79   75   73     78
PHOENIX              78   80   84   89   93   94   85   85   89   88   83   77     85
TUCSON               80   82   86   90   92   93   78   80   87   88   84   79     85
WINSLOW              
YUMA                 84   87   90   94   95   97   91   91   93   92   87   82     90 


CALIFORNIA

BAKERSFIELD          
BISHOP                
BLUE CANYON           
EUREKA               43   46   52   57   58   59   55   51   55   50   44   41     51
FRESNO               47   65   77   85   90   95   97   96   94   88   66   46     79
LONG BEACH           
LOS ANGELES AP        
LOS ANGELES CITY     69   72   73   70   66   65   82   83   79   73   74   71     73 
MT SHASTA CITY        
OAKLAND               
REDDING              
RED BLUFF            52   63   67   79   83   88   96   94   93   81   60   50     78 
SACRAMENTO           48   65   74   82   90   94   97   96   93   86   66   49     78
SANDBERG              
SAN DIEGO            72   71   70   68   59   58   68   70   69   68   75   73     68
SAN FRANCISCO AP      
SAN FRANCISCO CI     56   62   69   73   72   73   66   65   72   70   62   53     66
SANTA BARBARA         
SANTA MARIA           
STOCKTON              


COLORADO

ALAMOSA               
COLORADO SPRINGS      
DENVER               71   69   69   67   64   70   71   71   74   72   64   67     69
GRAND JUNCTION       61   65   65   70   73   81   79   77   79   74   63   61     71
PUEBLO               75   74   74   74   73   78   79   78   80   79   72   71     76


HAWAII & PACIFIC ISLANDS

HILO                 46   46   42   37   37   44   41   42   43   39   33   37     41
HONOLULU             65   68   72   70   72   74   76   77   77   70   65   63     71
KAHULUI              64   64   64   63   68   72   71   71   73   68   62   63     67
LIHUE                54   56   55   54   60   63   62   65   66   58   49   49     58

GUAM                 47   51   57   57   54   50   39   35   37   36   40   37     45
JOHNSTON             70   74   74   70   74   78   79   76   73   65   59   62     71
KOROR                54   54   63   62   54   44   46   45   52   48   51   49     52
KWAJALEIN             
MAJURO               61   64   66   59   58   55   56   61   59   55   53   53     58
PAGO PAGO            44   44   45   38   35   34   40   43   52   42   43   42     42
PONAPE               38   41   45   41   41   40   43   44   44   40   40   36     41
TRUK (CHUUK)         51   55   56   51   48   45   47   48   44   42   44   43     48
WAKE                 68   71   76   75   75   76   72   68   68   68   65   64     70
YAP                  59   62   68   68   64   51   46   45   49   46   52   50     55


IDAHO

BOISE                40   51   62   68   70   75   87   85   82   69   43   38     64
LEWISTON              
POCATELLO            40   53   61   66   67   75   83   81   80   71   46   40     64


MONTANA

BILLINGS             47   53   61   60   61   64   76   75   68   61   46   45     60
GLASGOW              
GREAT FALLS          49   56   66   62   62   65   79   76   67   61   46   44     61
HAVRE                50   61   69   67   70   72   85   82   73   65   48   46     68
HELENA               46   55   61   59   60   64   78   74   67   60   44   42     59
KALISPELL             
MILES CITY            
MISSOULA             33   44   54   57   59   63   81   77   69   55   34   29     55


NEVADA

ELKO                 
ELY                  68   68   71   70   72   80   80   81   82   75   67   67     73
LAS VEGAS            77   81   83   87   88   93   88   88   91   87   81   78     85
RENO                 65   68   75   80   81   85   92   92   91   83   70   64     79
WINNEMUCCA           51   56   60   66   72   77   86   85   82   74   54   52     68


NEW MEXICO

ALBUQUERQUE          72   72   73   77   79   83   76   75   79   79   76   71     76
CLAYTON               
ROSWELL              60   68   75   77   80   83   77   73   72   77   73   71     74


OREGON

ASTORIA              
BURNS                
EUGENE                
MEACHAM               
MEDFORD               
PENDLETON            28   38   48   52   57   56   69   66   62   44   28   23     48
PORTLAND              
SALEM                 
SEXTON SUMMIT         


UTAH

MILFORD              58   64   63   69   73   82   77   79   80   76   62   60     70
SALT LAKE CITY       45   54   64   69   72   80   83   82   82   72   53   42     66
WENDOVER              


WASHINGTON

OLYMPIA              22   30   34   35   37   35   43   44   47   34   21   19     33
QUILLAYUTE            
SEATTLE-TACOMA AP    28   40   50   52   56   56   65   65   62   43   28   23     47
SEATTLE URBAN SITE   28   34   42   47   52   49   63   56   53   37   28   23     43
SPOKANE              28   41   55   61   65   67   80   78   72   55   29   23     54
STAMPEDE PASS         
WALLA WALLA          24   35   51   62   67   72   86   83   73   59   31   19     59
YAKIMA                


WYOMING

CASPER                
CHEYENNE             64   67   67   63   61   67   69   68   70   69   61   60     66
LANDER               65   68   70   66   64   72   75   75   72   67   58   61     68
SHERIDAN             57   60   63   60   60   65   75   75   68   62   53   55     63