Only the first order stations record possible sunshine.
For more information, click one of the following: Western States, Alaska, or Hawaii and Pacific Islands
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