Mean Monthly and Annual Average Wet Bulb Temperatures

The lowest temperature that can be obtained by evaporating water into the air.

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

Arizona California Colorado Hawaii & Pacific Islands Idaho Montana Nevada New Mexico Oregon Utah Washington Wyoming
                          MEAN MONTHLY AND ANNUAL WET BULB TEMPERATURES (F)

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

ANCHORAGE            17   18   24   33   42   49   54   52   45   31   20   19     34
ANNETTE              35   36   38   41   47   51   51   52   48   45   38   36     43
BARROW              -13  -14  -12    1   21   34   39   38   31   15   -2  -10     11
BETHEL                6    7   14   24   38   47   49   47   39   27   15   11     27
BETTLES              -7   -8    4   20   39   51   50   45   34   16   -6   -4     20
BIG DELTA             0    3   14   29   40   49   49   46   36   21    2    4     25
COLD BAY             28   28   29   32   38   44   49   50   46   39   34   31     37
FAIRBANKS            -7   -8    3   18   31   44   50   47   36   17   -4   -5     19
GULKANA               0    4   16   29   40   47   47   45   36   22    4    3     24
HOMER                24   23   28   34   41   47   48   47   42   33   25   25     35
JUNEAU               27   28   33   39   45   50   49   49   45   38   30   27     38
KING SALMON          17   16   24   31   40   47   52   51   42   31   22   18     33
KODIAK               30   29   31   35   41   47   48   52   47   38   32   30     39
KOTZEBUE             -1   -2    0   12   30   42   51   49   39   21    7    2     21
MCGRATH              -2    0   11   26   40   50   55   50   41   23    4    1     25
NOME                  5    6   10   20   34   44   50   48   40   27   15    9     25
ST. PAUL ISLAND      23   21   21   25   32   37   46   48   44   37   32   29     33
TALKEETNA            12   13   20   29   39   47   55   48   40   28   15   15     30
VALDEZ               22   24   28   35   42   49   52   50   45   35   25   25     36
YAKUTAT              27   28   31   36   43   48   52   52   47   39   30   29     39


ARIZONA

FLAGSTAFF            24   27   29   34   39   45   54   53   48   38   30   25     37
PHOENIX              44   46   49   52   57   62   70   71   66   57   49   44     55
TUCSON               42   44   47   50   55   59   67   69   63   55   46   42     53
WINSLOW              27   31   35   40   45   51   60   59   53   44   34   27     42
YUMA                 44   47   49   53   57   63   71   72   67   59   50   44     56


CALIFORNIA

BAKERSFIELD          46   49   52   55   58   58   67   62   58   57   46   40     54
BISHOP               34   36   40   44   49   54   59   53   52   44   37   32     45
BLUE CANYON          
EUREKA               
FRESNO               44   47   51   54   57   62   66   60   62   56   48   42     54
LONG BEACH           50   52   54   57   59   62   61   62   61   61   54   50     57
LOS ANGELES AP       50   52   54   56   58   61   64   65   64   60   54   49     57
LOS ANGELES CITY     
MT SHASTA CITY       
OAKLAND (ALAMEDA NAS)46   49   50   51   53   56   57   58   58   56   51   47     53
REDDING              41   44   47   51   56   60   64   62   59   53   46   41     52
RED BLUFF            
SACRAMENTO           44   47   50   53   56   60   58   56   54   51   44   39     51
SANDBERG             
SAN DIEGO            51   53   54   57   59   61   65   66   65   61   55   50     58
SAN FRANCISCO AP     47   49   50   52   53   55   57   58   57   55   51   46     53
SAN FRANCISCO CI     
SANTA BARBARA        47   49   50   53   55   58   61   61   60   57   51   47     54
SANTA MARIA          49   50   52   53   54   53   55   59   59   56   51   44     53
STOCKTON             41   43   49   50   52   57   60   59   55   53   51   39     51


COLORADO

ALAMOSA              21   25   32   38   44   50   56   56   48   37   27   16     37
COLORADO SPRINGS     23   25   29   36   45   52   57   56   49   39   29   24     39
DENVER               24   27   31   38   46   54   58   57   50   41   31   25     40
GRAND JUNCTION       23   30   36   41   48   54   58   58   52   43   33   25     42
PUEBLO               24   28   33   40   49   56   61   60   53   42   32   26     42


HAWAII & PACIFIC ISLANDS

HILO                 66   66   67   68   69   70   71   72   72   71   70   67     69
HONOLULU             66   66   67   68   69   70   72   72   73   72   70   68     69
KAHULUI              67   67   67   68   69   71   67   67   67   67   66   63     67
LIHUE                66   66   67   68   69   72   73   73   73   72   70   68     70

GUAM                 74   74   74   75   76   77   77   77   77   77   77   76     76
JOHNSTON             
KOROR                77   77   77   78   78   78   78   78   78   78   78   78     78
KWAJALEIN            76   76   76   77   78   78   78   78   78   78   78   77     77
MAJURO               77   76   77   77   78   78   77   77   77   77   78   77     77
PAGO PAGO            78   78   78   78   77   76   75   75   76   77   77   78     77
PONAPE               76   76   76   77   77   77   77   77   77   77   77   77     77
TRUK (CHUUK)         77   76   77   77   78   78   78   78   78   78   78   77     77
WAKE                 71   70   72   73   74   76   77   77   78   77   75   73     74
YAP                  76   76   76   77   78   78   78   78   78   78   78   77     77


IDAHO

BOISE                27   31   38   43   49   54   58   56   51   42   35   26     42
LEWISTON             32   34   41   46   52   56   60   59   54   42   38   28     45
POCATELLO            22   26   33   39   46   52   56   54   48   40   31   19     39


MONTANA

BILLINGS             22   24   31   39   47   54   58   57   49   40   27   22     39
GLASGOW              10   16   26   37   47   54   58   56   48   38   25   15     36
GREAT FALLS          18   23   27   36   44   51   55   54   47   39   29   22     37
HAVRE                12   19   27   37   46   53   56   55   47   37   26   17     36
HELENA               16   22   27   36   44   50   54   53   46   38   28   20     36
KALISPELL            20   24   29   37   45   51   55   54   46   37   29   22     38
MILES CITY           14   20   28   38   48   56   60   58   49   40   28   19     38
MISSOULA             22   25   33   39   46   52   56   54   48   39   30   21     39


NEVADA

ELKO                 20   26   33   38   43   49   48   47   41   33   26   19     35
ELY                  21   25   29   33   40   46   51   50   44   36   28   21     35
LAS VEGAS            38   41   45   49   54   59   64   60   58   47   42   34     49
RENO                 29   32   36   40   45   51   55   54   49   42   34   26     41
WINNEMUCCA           27   31   33   37   44   50   54   52   46   38   32   27     39


NEW MEXICO

ALBUQUERQUE          30   34   37   42   49   55   60   61   55   46   36   30     44
CLAYTON              27   30   34   40   49   57   62   61   54   44   34   29     44
ROSWELL              33   37   41   47   55   62   60   61   60   51   40   34     48


OREGON

ASTORIA              40   42   43   45   49   53   56   57   55   50   45   41     48
BURNS                
EUGENE               39   41   44   47   51   55   59   58   52   49   44   35     48
MEACHAM              
MEDFORD              37   40   43   47   51   55   60   59   55   48   41   36     48
PENDLETON            32   34   40   44   49   54   57   56   52   44   38   28     44
PORTLAND             39   40   44   48   52   56   56   57   54   51   44   35     48
SALEM                36   37   41   44   48   51   59   54   55   46   44   35     46
SEXTON SUMMIT        


UTAH

MILFORD              25   29   34   40   46   51   57   56   50   42   33   27     41
SALT LAKE CITY       26   30   37   43   50   55   60   60   53   44   35   27     43
WENDOVER             25   28   34   40   47   53   59   57   51   42   33   26     42


WASHINGTON

OLYMPIA              38   39   42   45   50   54   58   54   54   44   42   35     46
QUILLAYUTE           40   40   42   45   49   52   56   56   54   48   43   37     47
SEATTLE-TACOMA AP    39   40   43   46   51   54   58   58   55   49   43   38     48
SEATTLE URBAN SITE   
SPOKANE              27   30   36   41   47   52   56   51   50   41   33   26     41
STAMPEDE PASS        
WALLA WALLA          
YAKIMA               28   32   39   44   50   54   59   54   52   43   32   27     43


WYOMING

CASPER               21   23   30   36   45   52   56   54   47   35   28   22     37
CHEYENNE             23   24   29   35   45   52   52   52   44   35   26   21     36
LANDER               17   21   29   36   44   51   55   53   46   37   26   16     36
SHERIDAN             21   23   31   38   47   55   55   53   46   36   26   19     37