Average Relative Humidity (Afternoon)
Average morning relative humidity values based on early morning readings when highest values generally occur. The observation times (Local Standard Time) of morning 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 (MORNING) 1996 - 2010
LST JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
ALASKA
ANCHORAGE 03 74 73 71 72 72 75 80 83 82 78 79 77 76
ANNETTE 03 80 80 80 83 85 87 88 89 89 86 82 81 84
BARROW 03 73 70 70 78 90 93 94 95 92 86 79 74 83
BETHEL 03 77 73 79 84 88 90 92 94 92 87 82 77 85
BETTLES 03 70 68 68 74 75 77 85 88 84 80 74 72 76
BIG DELTA 03 69 73 71 72 69 74 79 81 80 82 74 74 75
COLD BAY 03 85 84 85 86 89 92 93 94 90 86 84 87 88
FAIRBANKS 03 69 67 66 66 65 73 79 84 79 77 73 71 72
GULKANA 03 74 77 75 77 77 80 84 84 84 83 79 76 79
HOMER 03 81 80 79 81 84 88 91 90 89 83 80 80 84
JUNEAU 03 81 83 86 87 89 90 90 92 93 91 87 84 88
KING SALMON 03 76 75 78 80 83 86 89 89 87 84 82 77 82
KODIAK 03 79 78 77 78 82 86 88 88 86 79 77 76 81
KOTZEBUE 03 72 70 71 77 85 87 86 86 83 81 76 73 79
MCGRATH 03 73 72 73 73 76 81 84 87 84 82 78 74 78
NOME 03 73 70 71 76 78 81 84 84 80 77 75 72 77
ST. PAUL ISLAND 03 84 84 86 86 90 94 96 96 91 84 82 83 88
TALKEETNA 03 74 75 76 82 86 88 90 94 94 87 78 75 83
VALDEZ 03 79 75 77 81 87 90 93 94 91 82 75 77 83
YAKUTAT 03 83 85 86 90 93 95 96 96 95 91 87 84 90
ARIZONA
CHANDLER-WILMS AFB 07 67 60 55 39 31 27 45 53 51 53 54 64 50
DAVIS-MONTHAN AFB 07 58 56 51 39 34 28 51 61 51 49 49 56 49
FLAGSTAFF 05 72 73 71 65 62 53 68 77 74 70 70 71 69
FORT HUACHUCA 07 58 54 45 38 31 31 58 68 58 54 53 61 51
GILA BEND AFB 07 71 64 56 38 31 26 43 51 46 50 56 70 50
LUKE AFB 07 67 58 53 43 34 29 45 53 51 51 56 66 51
PHOENIX 05 66 60 56 43 35 31 45 51 50 51 58 66 51
TUCSON 05 62 58 53 41 35 33 58 64 57 53 56 63 53
WINSLOW 05 79 70 63 52 45 38 58 64 64 61 69 77 62
YUMA 05 56 55 54 46 44 45 50 58 57 54 58 60 53
CALIFORNIA
ALAMEDA NAS 07 84 83 81 78 77 79 83 85 84 82 81 83 82
BAKERSFIELD 04 84 80 74 67 57 51 48 54 58 63 76 84 66
BEALE AFB-MARYSVLLE 07 83 78 78 70 61 58 53 59 62 71 77 81 69
BISHOP 07* 70 67 57 43 38 33 35 39 43 51 63 68 50
BLUE CANYON 10* 60 59 60 52 48 42 32 32 34 42 53 56 48
CAMP PENDLETON MCAS 07 75 78 84 79 76 75 76 78 78 76 74 75 77
CHINA LAKE NAF 07 66 61 53 42 35 29 29 32 36 41 54 64 45
DAGGETT-BARSTOW 07 66 61 57 47 40 32 34 39 44 47 52 59 48
EDWARDS AFB 07 70 66 66 54 48 39 37 41 49 50 59 63 53
EL TORO MCAS-IRVINE 07 68 72 79 77 78 81 82 83 79 74 66 65 75
EUREKA
FORT ORD-MONTEREY 07 78 79 80 77 78 79 83 82 83 81 77 74 79
FRESNO 04 91 90 86 80 72 64 60 67 72 78 87 92 78
IMPERIAL BCH NALF 07 74 77 78 75 75 79 81 82 80 76 72 72 77
LEMOORE NAS 07 85 83 79 66 54 50 49 55 61 66 78 85 67
LONG BEACH 04 74 77 78 79 80 82 82 81 82 80 78 77 79
LOS ANGELES AP 04 70 75 78 80 83 85 86 85 83 78 72 69 79
LOS ANGELES CITY 04 63 71 74 78 81 85 84 84 78 76 61 62 75
MATHER AFB-SACRMNTO 07 88 82 81 75 68 65 62 69 71 77 84 87 76
MCCLELLAN AFB-SAC 07 87 81 79 72 64 62 59 66 68 77 84 86 74
MERCED-CASTLE AFB 07 88 84 81 73 64 60 54 58 65 76 81 87 73
MIRAMAR NAS 07 69 72 77 75 76 78 80 81 78 74 67 67 74
MOFFETT FIELD NAS 07 82 82 80 76 74 73 77 79 79 79 81 82 79
MONTEREY AP 07 78 81 82 79 81 82 86 87 85 82 76 76 81
MT SHASTA CITY 04 81 76 76 72 72 74 68 66 59 68 85 85 73
NORTH ISLAND NAS 07 74 77 77 74 75 78 80 81 80 78 73 72 77
OAKLAND 04 83 81 80 79 83 85 87 87 83 80 82 82 83
ONTARIO AP 06 74 75 79 75 77 76 73 72 71 73 69 70 74
OXNARD-PT MUGU PMTC 07 68 75 80 81 82 85 87 88 86 80 69 66 79
REDDING 04 82 76 77 75 69 63 56 60 62 71 81 80 71
RED BLUFF 04 81 79 74 68 64 55 50 51 51 62 75 82 66
RIVERSIDE-MARCH AFB 07 70 74 79 72 74 70 65 67 71 73 69 68 71
SACRAMENTO 04 90 87 84 82 81 78 76 78 77 80 86 90 82
SANDBERG 04 51 56 65 67 64 58 42 45 47 55 57 62 56
SAN BERNARDINO-NRTN 07 63 66 71 68 70 69 65 67 65 66 62 63 66
SAN CLEMENTE 07 83 85 84 82 83 85 86 86 86 86 84 84 84
SAN DIEGO 04 70 73 75 75 77 81 82 81 80 76 73 70 76
SAN FRANCISCO AP 04 86 84 81 81 83 84 86 86 83 82 84 85 84
SAN FRANCISCO CI 04 81 83 81 82 89 89 92 93 87 81 82 80 85
SAN NICOLAS ISLAND 07 75 79 81 80 81 83 86 87 84 81 74 73 81
SANTA BARBARA 04 77 77 79 79 82 87 88 87 86 82 77 77 82
SANTA MARIA 04 77 83 88 89 92 91 95 93 92 86 81 84 88
STOCKTON 04 90 88 84 78 73 68 66 67 69 76 85 90 78
TUSTIN MCAS 07 79 81 82 79 77 79 81 81 81 80 79 78 80
TWENTYNINE PALMS 07 62 59 51 42 37 27 31 40 38 42 48 - 42
VANDENBERG AFB 07 70 74 78 75 78 80 84 85 83 76 71 69 78
VICTORVILLE-GRG AFB 07 64 57 58 49 46 39 36 43 49 51 58 64 51
COLORADO
ALAMOSA 05 80 80 76 70 72 77 85 86 83 78 80 80 79
COLORADO SPRINGS 05 56 59 61 61 66 66 68 70 66 58 59 56 62
DENVER 05 64 67 68 67 71 69 69 70 68 65 68 65 68
GRAND JUNCTION 05 77 71 63 55 51 44 48 51 52 58 70 76 60
PUEBLO 05 68 66 66 63 67 69 72 74 71 65 72 67 68
HAWAII & PACIFIC ISLANDS
HILO 02 83 83 85 88 87 86 88 87 87 87 86 85 86
HONOLULU 02 81 79 76 75 74 73 73 72 74 76 78 80 76
KAHULUI 02 84 81 80 81 81 80 80 78 79 80 81 82 81
LIHUE 02 82 81 81 81 81 79 79 80 80 82 81 81 81
GUAM 04 89 88 90 91 92 93 95 96 96 95 92 87 92
JOHNSTON ISLAND 07 75 76 78 78 79 78 78 79 79 79 78 77 77
KOROR 03 90 90 90 90 92 92 90 90 89 91 92 91 91
KWAJALEIN 06 80 79 80 82 85 84 84 84 83 83 83 81 82
MAJURO 06 80 79 81 83 84 83 83 82 82 82 82 82 82
PAGO PAGO 07 88 89 89 90 88 86 84 84 84 84 85 86 86
PONAPE 06 82 84 85 88 90 91 93 95 94 95 93 87 90
TRUK (CHUUK) 05 81 80 82 85 86 88 89 89 89 88 87 84 86
WAKE 06 77 78 80 81 82 82 82 83 83 82 80 78 81
YAP 04 87 86 87 88 90 91 92 92 91 92 90 88 90
IDAHO
BOISE 05 79 78 72 68 67 65 54 53 60 66 76 79 68
LEWISTON 04 81 80 77 75 75 72 60 58 68 79 83 82 74
POCATELLO 05 79 79 76 70 70 71 63 61 65 70 77 80 72
MONTANA
BILLINGS 05 64 66 68 67 69 70 63 61 66 64 66 65 66
GLASGOW 05 75 79 80 74 74 75 72 68 72 73 78 78 75
GREAT FALLS 05 66 67 68 67 69 69 65 64 67 63 65 66 66
HAVRE 05 73 78 77 76 74 75 71 65 73 72 75 76 74
HELENA 05 70 72 72 70 72 71 66 66 73 73 73 72 71
KALISPELL 05 80 81 80 77 79 83 82 81 82 84 84 84 81
MILES CITY 05 73 80 79 78 77 78 68 64 73 74 79 77 75
MISSOULA 05 85 85 84 80 82 84 77 75 83 86 87 86 83
NEVADA
ELKO 04 78 79 76 72 70 68 55 55 60 67 76 78 70
ELY 04 71 74 72 69 67 60 53 58 60 66 70 71 66
FALLON NAS 07 78 75 65 53 48 42 38 41 49 61 72 77 58
LAS VEGAS 04 55 50 44 35 31 24 29 35 34 38 46 54 40
LAS VEGAS-NELLIS 07 54 50 44 33 27 22 29 36 34 38 43 54 39
RENO 04 79 74 70 67 67 66 64 66 69 72 75 78 71
TONOPAH TEST RNGE 07 62 59 53 41 36 30 30 37 37 46 53 62 46
WINNEMUCCA 04 78 75 71 65 62 59 46 47 53 62 74 78 64
NEW MEXICO
ALAMOGORDO-HOLLOMAN 07 65 60 50 40 38 42 55 65 66 65 59 65 56
ALBUQUERQUE 05 70 65 56 49 48 46 60 66 66 62 65 70 60
CLAYTON 05 64 64 64 64 69 71 76 76 75 64 65 63 68
CLOVIS-CANNON AFB 07 63 67 58 54 60 67 66 71 72 70 63 65 65
ROSWELL 05 71 66 56 53 59 64 68 74 76 70 66 66 66
OREGON
ASTORIA 04 86 87 87 88 89 89 89 91 90 89 87 86 88
BURNS 04 82 82 78 72 70 67 53 54 61 72 82 84 71
EUGENE 04 91 91 90 90 90 89 87 87 89 93 93 92 90
KLAMATH FALLS 07 90 89 86 78 74 71 71 71 77 83 89 89 81
MEACHAM
MEDFORD 04 90 88 86 84 83 78 73 74 79 86 91 91 84
PENDLETON 04 79 78 73 71 68 63 53 53 61 70 78 80 69
PORTLAND 04 85 85 85 85 84 82 80 82 86 90 87 86 85
SALEM 04 86 88 88 87 87 87 86 86 87 91 90 88 88
SEXTON SUMMIT 04 80 79 84 84 74 73 65 67 66 70 81 79 75
UTAH
DUGWAY PROVING GND 07 75 75 68 60 51 45 39 44 50 60 72 78 59
MILFORD 05 85 83 73 68 65 54 56 57 55 67 78 82 66
OGDEN-HILL AFB 07 68 65 63 52 54 47 45 45 49 57 64 67 56
SALT LAKE CITY 05 78 77 70 66 65 59 52 54 61 68 74 79 67
WENDOVER 05 70 66 55 48 43 43 33 36 42 53 69 73 53
WASHINGTON
FORT LEWIS-GRAY AFB 07 87 89 90 85 80 78 79 81 86 90 89 86 85
OLYMPIA 04 91 91 91 90 90 91 91 91 93 94 93 92 92
QUILLAYUTE 04 91 91 92 92 93 93 94 95 94 94 92 92 93
SEATTLE URBAN SITE
SEATTLE-TACOMA AP 04 81 80 82 83 82 81 81 83 86 86 84 82 83
SPOKANE 04 85 84 81 77 76 74 64 63 71 79 87 87 77
STAMPEDE PASS 04 94 93 91 90 89 91 86 87 81 87 94 95 90
TACOMA-MCCHORD AFB 07 81 82 82 80 77 77 80 81 83 83 83 81 81
WALLA WALLA 10* 76 68 59 49 49 43 34 39 44 58 72 78 56
WHIDBEY ISLAND NAS 07 84 85 86 85 84 84 86 89 90 89 85 84 86
YAKIMA 04 82 82 76 71 70 69 67 70 75 79 82 84 76
WYOMING
CASPER 05 68 70 73 75 77 75 69 66 68 67 69 68 70
CHEYENNE 05 57 61 65 68 71 71 70 69 67 61 60 58 65
LANDER 05 68 68 66 65 65 61 54 54 59 63 69 68 63
SHERIDAN 05 69 72 73 73 76 77 72 68 71 70 73 70 72