Mean Number of Clear Days - Western Regional Climate Center (WRCC)
This data is based on daylight hours only. A clear day denotes zero to 3/10 average
sky cover. Partly cloudy is 4/10 to 7/10 tenths. Cloudy is 8/10 to 10/10 tenths.
There is no table for partly cloudy. Simply add number of clear days with cloudy days
and subtract from total days in the month to get number of partly cloudy days. Annual
totals may differ from the 12 month totals due to rounding.
(m) - In Barrow, the sun sets below the horizon on November 18 and does not rise again
until January 24. Data is incomplete between these dates.
* = less than 1/2 day
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 NUMBER OF CLEAR DAYS
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
ALASKA
ANCHORAGE 7 7 8 6 4 3 3 3 4 5 6 6 61
ANNETTE 4 3 4 4 4 3 3 4 4 2 3 3 40
BARROW 6m 12 14 11 3 3 4 1 1 2 6m 4m 66m
BETHEL 8 10 9 6 4 2 2 1 2 4 6 8 62
BETTLES 15 10 9 7 7 4 2 2 7 5 9 9 86
BIG DELTA
COLD BAY 2 2 2 1 1 * * * * 1 1 2 12
FAIRBANKS 9 8 10 7 4 3 3 3 4 4 7 7 69
GULKANA 15 6 9 5 3 2 4 3 6 3 5 7 67
HOMER 8 7 6 5 4 4 3 5 5 5 6 7 65
JUNEAU 5 4 4 4 4 3 3 4 3 2 3 3 43
KING SALMON 8 7 7 4 3 1 1 1 2 4 6 6 50
KODIAK 5 6 6 4 3 3 3 4 4 6 7 6 59
KOTZEBUE 11 12 12 10 8 6 4 3 6 8 9 11 100
MCGRATH 9 9 9 7 4 2 2 2 4 4 6 8 66
NOME 10 12 11 9 7 6 4 3 5 7 8 10 91
ST. PAUL ISLAND 2 3 3 2 1 1 1 1 1 1 1 2 18
TALKEETNA 6 8 9 5 6 1 5 3 5 6 8 5 67
VALDEZ 5 7 7 6 4 3 3 4 4 5 6 5 59
YAKUTAT 5 4 4 4 2 2 2 3 3 3 4 4 40
ARIZONA
FLAGSTAFF 12 11 12 12 15 18 9 10 16 17 15 14 162
PHOENIX 14 13 14 17 21 23 17 18 22 20 18 15 211
TUCSON 14 13 15 17 20 21 10 12 19 20 18 15 193
WINSLOW 12 12 13 15 17 20 11 12 18 19 16 14 177
YUMA 15 15 17 21 24 25 20 22 24 23 19 17 242
CALIFORNIA
BAKERSFIELD 7 7 10 12 18 23 26 26 24 19 12 8 191
BISHOP 11 11 13 14 15 20 22 23 23 20 15 14 201
BLUE CANYON 9 8 9 10 12 18 26 25 22 17 10 9 174
EUREKA 6 5 6 6 6 7 7 6 9 8 6 6 78
FRESNO 5 8 11 14 18 23 27 26 24 20 12 7 194
LONG BEACH 12 10 11 12 10 12 18 19 15 13 13 13 159
LOS ANGELES AP 12 11 12 11 10 10 13 14 13 13 15 13 147
LOS ANGELES CITY 14 12 13 12 11 14 21 22 18 16 16 15 186
MT SHASTA CITY 9 8 8 10 12 16 25 24 21 14 9 7 164
OAKLAND 9 8 10 11 12 15 17 15 16 14 11 9 147
REDDING 8 8 8 8 11 17 25 25 22 18 11 10 172
RED BLUFF 8 8 9 11 15 19 27 25 23 16 10 7 178
SACRAMENTO 7 8 10 12 17 22 27 26 24 19 10 8 188
SANDBERG 12 10 11 13 17 23 25 26 24 20 15 12 208
SAN DIEGO 12 10 11 10 8 9 13 15 15 14 15 14 146
SAN FRANCISCO AP 9 8 10 11 14 16 21 19 18 16 11 9 160
SAN FRANCISCO CI
SANTA BARBARA
SANTA MARIA 13 12 13 13 14 15 17 17 16 17 15 14 176
STOCKTON 5 7 10 12 17 22 27 26 23 19 9 7 184
COLORADO
ALAMOSA 13 11 10 10 9 14 9 11 15 17 14 14 148
COLORADO SPRINGS 12 9 9 8 7 10 9 10 14 15 12 12 127
DENVER 10 8 8 7 6 10 9 10 13 13 10 11 115
GRAND JUNCTION 9 8 8 8 10 15 14 13 16 15 11 10 136
PUEBLO 12 10 10 9 9 12 11 12 15 15 12 12 139
HAWAII & PACIFIC ISLANDS
HILO 6 5 3 1 1 2 1 2 3 3 3 5 36
HONOLULU 9 8 8 6 7 6 7 8 8 7 7 8 90
KAHULUI 13 11 11 8 10 11 11 12 12 11 11 12 131
LIHUE 8 7 5 3 3 3 3 4 5 5 4 6 56
GUAM 3 2 3 1 1 1 * 0 * * 2 3 16
JOHNSTON 13 11 11 7 6 7 7 6 6 7 7 11 99
KOROR * * 1 1 1 * * * * 1 * * 4
KWAJALEIN 2 3 2 2 1 1 1 1 1 1 1 2 18
MAJURO 1 1 1 1 1 * 0 1 1 1 0 1 8
PAGO PAGO 1 0 1 1 1 2 2 2 2 1 1 1 14
PONAPE * * * * * * 0 1 1 0 * * 2
TRUK (CHUUK) * * * * * * * * * * * * *
WAKE 12 12 12 11 10 10 7 6 7 8 12 14 121
YAP 1 1 1 1 1 * 0 * * 0 * 1 5
IDAHO
BOISE 4 5 6 6 8 12 20 19 17 12 6 5 120
LEWISTON 3 3 4 5 6 8 18 16 13 9 3 3 91
POCATELLO 3 4 5 6 7 12 17 16 15 12 5 3 106
MONTANA
BILLINGS 6 4 4 4 6 7 13 14 10 9 6 6 89
GLASGOW 5 5 5 5 6 7 12 12 9 8 6 5 86
GREAT FALLS 5 4 4 4 5 5 13 12 10 7 5 5 79
HAVRE 4 5 5 4 6 6 15 14 9 8 5 5 86
HELENA 5 4 4 4 5 6 14 13 11 8 5 4 82
KALISPELL 2 2 3 4 5 6 14 12 10 6 2 2 70
MILES CITY 6 5 5 5 6 8 15 15 10 12 7 7 101
MISSOULA 2 3 3 4 5 6 15 14 10 7 2 2 75
NEVADA
ELKO 7 6 6 6 8 13 17 18 18 14 8 8 130
ELY 9 7 7 7 7 13 15 15 17 14 10 9 131
LAS VEGAS 14 12 14 16 18 22 20 22 22 20 16 15 210
RENO 8 7 8 8 12 16 22 22 21 16 9 8 158
WINNEMUCCA 7 6 7 6 9 14 20 19 18 14 8 8 138
NEW MEXICO
ALBUQUERQUE 13 11 11 13 14 17 12 13 17 17 15 14 167
CLAYTON 13 11 11 12 11 13 12 15 17 18 15 14 162
ROSWELL 11 12 14 14 13 17 11 13 13 18 16 15 168
OREGON
ASTORIA 3 3 3 3 3 3 6 6 8 5 3 3 38
BURNS 5 6 6 5 9 12 19 20 16 12 6 5 120
EUGENE 2 3 3 4 6 8 16 14 12 5 2 1 75
MEACHAM 3 3 3 4 6 9 20 18 13 8 4 3 94
MEDFORD 3 4 5 6 9 13 23 22 18 10 3 2 117
PENDLETON 2 3 5 5 8 10 19 18 15 10 4 3 101
PORTLAND 3 3 3 3 5 6 13 11 10 5 3 2 68
SALEM 3 3 4 4 6 7 15 14 11 6 3 2 77
SEXTON SUMMIT 5 4 5 6 9 13 23 21 17 11 6 5 126
UTAH
MILFORD 9 8 9 10 11 17 16 16 18 17 11 10 151
SALT LAKE CITY 6 5 7 7 9 14 17 16 16 14 8 6 125
WENDOVER 10 9 9 8 9 14 20 19 19 16 9 10 152
WASHINGTON
OLYMPIA 2 2 3 3 4 5 10 9 8 3 2 2 52
QUILLAYUTE 3 4 4 3 3 4 6 6 8 5 3 4 51
SEATTLE-TACOMA AP 3 3 3 3 4 5 10 9 8 4 2 2 58
SEATTLE URBAN SITE 3 3 4 5 7 7 12 10 9 5 3 3 71
SPOKANE 3 3 5 4 6 7 16 15 12 8 3 3 86
STAMPEDE PASS 2 2 3 3 4 6 13 12 10 6 3 2 66
WALLA WALLA 2 4 6 8 10 12 21 21 15 11 4 2 116
YAKIMA 4 4 6 6 8 10 19 18 15 9 5 4 109
WYOMING
CASPER 7 6 6 5 6 10 14 13 13 11 7 8 107
CHEYENNE 9 7 7 6 5 9 10 10 13 13 10 9 106
LANDER 8 7 7 6 6 10 14 13 14 12 8 10 114
SHERIDAN 6 5 5 5 6 8 13 14 12 10 6 7 95