Average Relative Humidity (Afternoon)

Average afternoon relative humidity values based on late afternoon readings when lowest values generally occur. The observation times (Local Standard Time) of afternoon humidities are shown after the city (column "LST").

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 PERCENT RELATIVE HUMIDITY (AFTERNOON) 1996 - 2010


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

ANCHORAGE           15     72   67   57   54   50   56   62   65   64   67   74   76     64
ANNETTE             15     76   73   68   66   65   67   69   71   73   78   77   79     72
BARROW              15     73   70   71   76   84   85   83   87   88   85   80   74     80
BETHEL              15     76   72   74   72   63   62   68   72   70   76   80   76     72
BETTLES             15     67   63   59   60   49   47   54   61   63   72   72   72     62
BIG DELTA           15     66   62   54   45   39   47   52   53   55   70   71   70     57
COLD BAY            15     82   81   78   77   76   80   82   83   80   77   82   85     80
FAIRBANKS           15     69   63   52   45   37   42   50   54   54   66   72   71     56
GULKANA             15     71   66   55   46   40   43   48   49   52   67   76   74     57
HOMER               15     77   73   68   65   65   67   71   72   71   70   75   78     71
JUNEAU              15     77   75   70   63   63   67   72   75   79   82   81   82     74
KING SALMON         15     74   68   65   61   56   59   64   66   65   69   77   76     67
KODIAK              15     75   72   66   66   70   75   76   74   73   67   70   73     71
KOTZEBUE            15     72   69   69   74   77   78   76   75   72   75   76   74     74
MCGRATH             15     71   62   52   49   45   48   55   60   59   69   74   74     60
NOME                15     72   67   68   72   70   70   74   75   68   68   73   72     71
ST. PAUL ISLAND     15     83   84   83   82   83   84   89   90   83   78   81   82     84
TALKEETNA           15     68   64   59   53   50   55   61   64   64   69   71   73     63
VALDEZ              15     75   69   66   63   64   67   71   73   74   73   71   76     70
YAKUTAT             15     81   78   72   70   72   74   78   79   79   80   80   84     77


ARIZONA

CHANDLER-WILMS AFB  13     41   36   32   22   18   18   29   33   31   31   32   42     30
DAVIS-MONTHAN AFB   13     35   32   28   20   17   16   29   34   28   28   30   35     28
FLAGSTAFF           17     50   45   41   32   26   21   39   43   37   36   44   50     39
FORT HUACHUCA       13     36   31   24   21   17   19   36   44   36   32   30   39     30
GILA BEND AFB       13     40   34   29   20   17   14   25   28   25   27   30   42     28
LUKE AFB            13     40   34   30   22   18   16   27   32   29   30   32   41     29
PHOENIX             17     32   26   24   16   13   11   20   23   23   22   27   33     22
TUCSON              17     31   26   22   16   13   13   28   32   28   24   28   34     25
WINSLOW             17     51   35   27   20   17   14   26   29   28   28   35   50     30
YUMA                16     28   24   21   17   15   13   22   24   24   23   27   32     23


CALIFORNIA

ALAMEDA NAS         16     68   65   62   59   60   60   62   63   60   60   64   69     63
BAKERSFIELD         16     62   51   42   33   26   23   21   24   29   34   50   62     38
BEALE AFB-MARYSVLLE 13     70   58   57   45   36   33   32   34   37   43   58   68     48
BISHOP              16     34   28   22   17   16   14   14   14   15   18   27   35     21
BLUE CANYON         16     58   61   61   54   47   39   34   34   42   48   60   59     50
CAMP PENDLETON MCAS 16     54   57   60   57   61   60   59   60   59   58   54   54     58
CHINA LAKE NAF      16     34   29   25   20   17   14   14   15   16   19   26   33     22
DAGGETT-BARSTOW AP  16     34   28   27   20   17   14   17   19   19   20   25   32     23
EDWARDS AFB         13     40   36   36   26   22   17   17   20   22   24   32   40     28
EL TORO MCAS-IRVINE 16     54   55   57   54   57   57   53   55   54   55   52   53     55
EUREKA              
FORT ORD-MONTEREY   13     62   64   65   63   65   67   71   69   67   64   59   59     65
FRESNO              16     67   56   46   34   26   23   21   25   28   34   54   69     40
IMPERIAL BEACH NALF 16     67   68   67   67   68   70   71   72   72   71   68   67     69
LEMOORE NAS         16     63   54   44   32   25   23   23   26   28   32   49   64     38
LONG BEACH          16     51   52   53   50   54   55   52   53   54   53   53   52     53
LOS ANGELES AP      16     59   62   65   64   66   67   68   68   66   64   61   60     64
LOS ANGELES CITY    16     50   52   52   54   55   56   53   55   54   56   49   50     53
MATHER AFB-SACRMNTO 13     70   58   57   45   36   33   30   33   36   42   59   71     47
MCCLELLAN AFB-SAC   13     72   61   58   45   36   33   31   34   37   44   62   72     49
MERCED-CASTLE AFB   13     75   64   58   44   35   35   30   33   36   44   58   75     49
MIRAMAR NAS         16     56   57   59   58   60   60   57   58   58   59   56   55     58
MOFFETT FIELD NAS   16     62   59   56   52   53   54   58   58   55   54   59   63     57
MONTEREY AP         16     64   67   66   62   64   64   66   67   67   67   66   64     65
MT SHASTA CITY      16     69   60   52   43   42   38   29   28   33   47   64   70     48
NORTH ISLAND NAS    16     61   63   63   64   67   68   69   70   69   66   62   61     65
OAKLAND             16     72   69   66   62   66   68   68   68   64   63   69   71     67
ONTARIO AP          15     45   44   50   42   44   39   35   36   38   37   36   39     40
OXNARD-PT MUGU PMTC 16     61   64   67   68   70   71   71   71   70   69   63   61     67
REDDING             16     56   39   43   34   31   25   18   19   25   30   48   51     35
RED BLUFF           16     59   51   44   35   29   23   18   19   21   32   51   62     37
RIVERSIDE-MARCH AFB 13     42   43   46   40   40   36   31   33   35   36   37   39     38
SACRAMENTO          16     70   59   53   43   35   31   28   29   31   38   58   70     45
SANDBERG            16     56   50   52   50   47   38   28   29   33   42   50   59     44
SAN BERNARDINO-NRTN 13     37   39   44   38   40   37   30   32   35   37   37   37     37
SAN CLEMENTE        16     70   72   70   68   71   72   73   73   74   72   72   73     72
SAN DIEGO           16     56   58   59   59   64   66   66   66   65   63   61   58     62
SAN FRANCISCO AP    16     66   64   62   59   59   58   59   61   58   59   63   67     61
SAN FRANCISCO CI    16     63   63   61   61   68   72   74   73   66   60   63   63     66
SAN NICOLAS ISLAND  16     63   67   67   64   65   65   66   67   64   65   62   63     65
SANTA BARBARA       16     55   55   54   57   58   64   63   63   62   62   57   57     59
SANTA MARIA         16     58   61   63   60   60   60   60   62   62   61   61   58     60
STOCKTON            16     71   60   51   41   32   28   26   28   30   37   60   71     45
TUSTIN MCAS         16     56   57   57   55   58   59   57   57   56   57   56   56     57
TWENTYNINE PALMS    16     36   33   27   23   19   15   18   24   18   23   28   33     25
VANDENBERG AFB      13     56   59   65   63   67   68   70   69   67   62   57   56     63
VICTORVILLE-GRG AFB 13     37   32   32   25   22   18   19   22   24   26   33   40     27


COLORADO

ALAMOSA             17     58   49   38   28   27   26   36   38   34   44   48   60     40
COLORADO SPRINGS    17     46   41   38   34   36   34   39   41   37   36   44   48     40
DENVER              17     49   44   40   35   38   35   34   35   34   36   49   52     40
GRAND JUNCTION      17     61   47   36   27   24   19   22   24   26   33   46   59     35
PUEBLO              17     50   40   34   29   32   28   32   34   32   32   43   50     36


HAWAII & PACIFIC ISLANDS

HILO                14     66   65   67   70   67   65   68   68   69   70   70   68     68
HONOLULU            14     62   59   57   56   54   52   52   51   52   56   59   61     56
KAHULUI             14     64   62   60   59   56   55   56   55   55   58   60   62     58
LIHUE               14     67   66   67   67   67   65   66   66   65   68   69   68     67

GUAM                16     76   74   73   72   72   75   78   80   80   80   80   78     76
JOHNSTON            
KOROR               15     76   75   74   74   77   78   78   77   76   77   77   77     76
KWAJALEIN           18     71   70   71   74   78   78   78   77   77   77   76   74     75
MAJURO              18     74   73   75   78   78   78   77   76   76   76   77   76     76
PAGO PAGO           13     76   76   75   76   76   76   75   73   73   75   76   75     75
PONAPE              15     75   72   74   75   76   78   76   77   76   76   77   77     76
TRUK (CHUUK)        17     76   74   75   76   78   78   77   76   76   77   77   78     76
WAKE                12     66   65   67   68   68   68   70   71   71   71   70   67     69
YAP                 16     76   74   73   72   76   78   78   78   78   78   78   77     76


IDAHO

BOISE               17     68   57   43   35   31   28   21   23   29   37   57   68     41
LEWISTON            16     70   60   49   42   38   35   25   25   32   47   68   73     47
POCATELLO           17     70   62   51   38   35   31   24   23   28   37   59   70     44


MONTANA

BILLINGS            17     56   52   46   40   42   39   31   30   37   41   53   57     44
GLASGOW             17     72   71   58   42   40   39   33   31   38   46   63   73     50
GREAT FALLS         17     60   54   49   41   41   38   29   30   38   42   55   61     45
HAVRE               17     69   69   53   41   36   36   27   25   35   42   59   70     47
HELENA              17     62   54   46   38   38   36   29   30   36   42   57   66     44
KALISPELL           17     74   67   54   42   43   45   35   35   43   53   72   79     54
MILES CITY          17     69   69   55   47   44   41   30   28   40   46   64   71     50
MISSOULA            17     76   66   52   41   43   42   31   32   40   50   71   80     52


NEVADA

ELKO                16     59   52   42   34   30   26   19   20   22   28   48   59     37
ELY                 16     55   50   44   35   31   24   22   24   25   32   37   56     37
FALLON NAS          16     51   41   32   26   25   21   18   18   21   28   41   51     31
LAS VEGAS           16     30   26   21   16   13   10   15   17   17   19   26   32     20
LAS VEGAS-NELLIS    13     31   28   24   19   16   14   19   22   20   21   26   32     23
RENO                16     50   40   33   28   26   22   18   20   22   27   42   51     32
TONOPAH TEST RNGE   13     45   37   29   22   19   16   18   22   20   25   35   42     28
WINNEMUCCA          16     55   46   37   29   26   22   15   16   20   28   46   57     33


NEW MEXICO

ALAMOGORDO-HOLLOMAN 13     40   34   25   22   20   23   32   38   37   35   32   42     32
ALBUQUERQUE         17     40   32   24   19   18   18   27   30   31   30   36   43     29
CLAYTON             17     44   39   32   28   32   34   39   40   42   38   46   52     39
CLOVIS-CANNON AFB   13     39   41   31   29   32   39   37   41   41   42   35   43     38
ROSWELL             17     40   34   24   22   24   27   32   37   41   36   38   40     33


OREGON

ASTORIA             16     77   74   70   69   69   70   69   70   69   72   77   80     72
BURNS               16     68   60   47   35   33   30   21   22   25   37   57   70     42
EUGENE              16     79   72   64   58   54   49   39   40   44   61   79   83     60
MEACHAM             16     79   73   61   60   50   45   26   34   40   57   80   85     58
MEDFORD             16     71   58   50   44   39   33   26   27   30   44   68   76     47
PENDLETON           16     73   63   49   42   37   31   23   26   32   44   68   76     47
PORTLAND            16     74   66   59   55   52   49   44   44   48   60   73   78     58
SALEM               16     75   69   61   57   54   49   40   40   45   60   76   80     59
SEXTON SUMMIT       16     77   69   67   62   53   51   40   40   43   57   76   80     60


UTAH

DUGWAY PROVING GND  13     58   53   41   33   28   25   20   22   27   34   47   62     37
MILFORD             17     60   54   37   28   23   17   20   21   20   28   46   60     35
OGDEN-HILL AFB      13     65   58   52   39   40   31   28   29   34   44   54   61     45
SALT LAKE CITY      17     69   59   47   39   33   26   22   23   29   41   58   71     43
WENDOVER            17     59   47   32   27   23   21   14   19   20   31   51   60     34


WASHINGTON

FORT LEWIS-GRAY AFB 13     76   73   67   60   58   55   53   52   56   67   76   77     64
OLYMPIA             16     80   71   62   57   54   54   50   50   55   68   80   84     64
QUILLAYUTE          16     84   77   72   67   66   66   64   66   67   75   83   86     73
SEATTLE-TACOMA AP   16     74   67   61   57   54   53   49   50   57   67   75   77     62
SEATTLE URBAN SITE  
SPOKANE             16     78   69   55   44   41   36   27   28   35   49   76   82     52
STAMPEDE PASS       16     91   88   84   78   70   70   59   63   66   78   91   94     78
TACOMA-MCCHORD AFB  13     72   69   62   58   57   57   57   55   59   65   72   73     63
WALLA WALLA         
WHIDBEY ISLAND NAS  16     75   72   69   66   67   68   68   69   70   75   77   78     71
YAKIMA              16     70   57   40   33   31   30   26   28   32   41   62   74     44


WYOMING

CASPER              17     60   57   48   41   39   32   26   24   30   40   56   62     43
CHEYENNE            17     49   48   47   42   44   41   38   38   38   41   50   52     44
LANDER              17     60   54   45   39   36   31   27   26   32   40   56   62     42
SHERIDAN            17     64   60   50   43   46   44   33   30   38   45   61   65     48