Mean Monthly and Annual Average Number of Thunderstorm Days
Based on the National Weather Service "METAR" Observation Code
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 NUMBER OF THUNDERSTORMS
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
ALASKA
ANCHORAGE 0 0 0 0 * * * * * 0 0 0 1
ANNETTE * 0 * 0 0 * * * * * * * 2
BARROW 0 0 0 0 0 * * * 0 0 0 0 *
BETHEL 0 0 0 0 * 1 1 * * 0 0 0 2
BETTLES 0 0 0 0 1 3 3 1 * 0 0 0 7
BIG DELTA 0 0 0 0 * 2 2 * 0 0 0 0 5
COLD BAY 0 0 0 0 0 0 0 * * * * * *
FAIRBANKS 0 0 0 * 1 3 2 1 * 0 0 0 7
GULKANA 0 0 0 0 1 1 2 1 0 0 0 0 5
HOMER 0 0 0 0 * 0 * * 0 * 0 0 *
JUNEAU * 0 0 0 0 * * * * 0 * 0 *
KING SALMON 0 0 0 0 * * * * * * * * 1
KODIAK 0 0 0 0 0 * * * 0 0 0 0 *
KOTZEBUE 0 0 0 0 0 * * * * 0 0 0 1
MCGRATH 0 0 0 0 1 3 2 1 * 0 0 0 7
NOME 0 0 0 0 * * * * 0 0 0 0 1
ST. PAUL ISLAND 0 0 0 0 0 * 0 0 0 0 0 0 *
TALKEETNA 0 0 0 0 * 1 1 1 * 0 0 0 4
VALDEZ 0 * 0 0 0 * * * * * * 0 1
YAKUTAT * * * * * 0 * * * 1 * * 2
ARIZONA
CHANDLER-WLMS AFB 1 1 1 1 1 1 6 5 3 1 1 1 23
DAVIS-MONTHAN 1 1 1 1 2 3 15 14 5 2 1 1 47
DOUGLAS AP * * 1 1 1 5 19 18 5 2 0 0 52
FLAGSTAFF 0 * 1 1 3 4 16 15 7 2 1 * 49
FORT HUACHUCA 1 1 1 1 2 5 20 18 8 2 1 1 61
GILA BEND AFB 1 1 1 1 1 1 6 6 2 1 1 1 23
LUKE AFB 1 1 1 1 1 1 6 7 3 1 1 1 25
PHOENIX * 1 1 1 1 1 6 7 4 1 * 1 24
PRESCOTT * * * 2 2 3 17 17 5 2 1 * 48
TUCSON * * 1 1 2 3 13 14 6 2 1 * 41
WINDOW ROCK 0 * 1 2 3 5 17 14 5 3 * * 48
WINSLOW * * 1 1 2 3 11 10 5 1 * * 36
YUMA * * * * * * 2 2 1 1 * * 7
CALIFORNIA
ALAMEDA NAS * * * * * * * * * * * * 6
BAKERSFIELD * * 1 * * * * * 1 * * * 3
BEALE AFB-MARYSVILLE 1 1 1 1 1 1 1 1 1 1 1 1 12
BISHOP 0 0 0 * 1 1 5 3 1 * * 0 12
BLUE CANYON * * 1 1 3 2 1 1 1 1 * 0 12
BLYTHE 0 * * * * * 3 3 2 * 0 0 9
CAMP PENDLETON MCAS * 1 1 0 * * * 1 * * * * 5
DAGGETT-BARSTOW AP * * * 1 * 1 4 4 2 * * * 12
EDWARDS AFB * * 1 1 1 1 1 2 1 1 1 * 10
EL TORO MCAS-TUSTIN 1 * 1 * * * * * * 1 * * 3
EUREKA 1 1 * * * * * * * * 1 1 4
FAIRFIELD-TRAVIS AFB * * * * 1 0 * 0 * * * 0 2
FORT ORD-MONTEREY 1 1 1 1 * * * 1 1 1 1 * 8
FRESNO * * 1 1 1 1 * * 1 1 * * 5
IMPERIAL BEACH NALF * * * * 0 * * * * * * * 5
LEMOORE NAS * * 1 * * * * * 1 * * * 2
LONG BEACH * 1 1 * * * * * 1 * * * 4
LOS ANGELES AP * 1 1 * * * * * * * * * 4
LOS ANGELES CITY 1 1 1 1 * * * * * * 1 1 6
MIRAMAR NAS * 1 1 * * * * * * * * * 2
MOFFETT FIELD * * * * * * * * * * * * 6
MT SHASTA CITY * * * 1 3 3 3 2 1 * * * 13
NEEDLES AP * * * * * * 4 4 2 1 * * 13
NORTH ISLAND NAS * * 1 * * * * * * * * * 1
OAKLAND * * * * * * * * * * * * 2
ONTARIO AP 1 1 1 * * * * * 1 1 * * 5
OXNARD-PT MUGU PMTC 1 1 * * * * * * * * * * 2
REDDING 1 1 2 2 2 2 1 1 1 1 * * 13
RED BLUFF * 1 1 1 2 2 1 1 1 1 * * 10
SACRAMENTO * 1 1 1 * * * * 1 * * * 5
SANDBERG * * * 1 1 * 1 1 1 * * * 4
SAN DIEGO * * * * * * * * * * * * 3
SAN FRANCISCO AP * * * * * * * * * * * * 2
SAN FRANCISCO CI * * * * * * * * * * * * 2
SANTA BARBARA * * * * * * * * * * * 1 3
SANTA MARIA * * * * * * * * * * * * 2
STOCKTON * * * 1 * * * * * * * * 3
THERMAL AP * 0 * * * 0 3 2 1 * * * 7
TUSTIN MCAS 1 1 1 * * * * * 1 * * * 4
VICTORVILLE-GRG AFB 1 * 1 1 1 1 2 3 1 1 1 * 13
COLORADO
AKRON AP 0 0 * 2 9 13 12 11 5 1 0 0 52
ALAMOSA 0 * * 1 6 6 11 12 5 1 * 0 42
COLORADO SPRINGS 0 0 1 2 8 11 16 13 5 1 0 0 56
DELTA * * 1 2 4 4 8 8 5 1 * * 35
DENVER * * * 2 6 10 11 8 4 1 * 0 42
GRAND JUNCTION * * 1 2 5 5 8 8 5 2 * * 36
LA JUNTA 0 * * 2 6 9 10 8 3 1 0 0 38
PUEBLO 0 0 * 2 6 8 12 9 3 1 * 0 40
TRINIDAD MUNI 0 0 * 3 10 12 17 15 4 2 * 0 64
HAWAII & PACIFIC ISLANDS
HILO 1 1 2 1 1 * * * 1 1 1 1 10
HONOLULU 1 1 1 1 * * * * 1 1 1 1 7
KAHULUI 1 1 * 1 * 0 * * * * * 1 4
LIHUE 1 1 1 * 1 * * * * 1 1 1 8
GUAM 1 0 0 1 1 2 5 6 7 3 2 * 28
JOHNSTON * 1 * * * * * * * * 1 1 4
KOROR 1 1 1 2 3 4 3 3 4 4 3 3 33
KWAJALEIN * * * 1 1 1 1 1 2 1 1 1 11
MAJURO * 1 1 1 1 1 2 2 3 2 2 1 16
PAGO PAGO 3 3 3 3 2 1 1 1 1 3 4 3 27
PONAPE 1 1 1 1 2 2 3 2 3 3 3 2 23
TRUK (CHUUK) 1 * 1 1 2 2 2 1 2 2 2 2 18
WAKE 0 * * * * 1 1 1 1 1 * * 6
YAP 1 * * 1 1 2 2 2 3 3 2 2 18
IDAHO
BOISE * * 1 1 3 3 3 2 2 1 * * 15
BURLEY AP * * * * 4 4 4 5 1 1 0 * 20
COEUR D'ALENE 0 0 * 1 2 5 2 2 1 1 0 0 13
IDAHO FALLS AP 0 * * * 3 4 5 6 2 * 0 * 21
LEWISTON 0 * * 1 2 3 4 3 1 * * 0 15
POCATELLO * * * 1 4 5 6 5 3 1 * * 24
MONTANA
BILLINGS * * * 1 4 7 8 6 2 * 0 * 28
BOZEMAN-BELGRADE 0 0 0 * 5 9 9 9 2 * * 0 34
BUTTE AP 0 0 * 1 5 9 11 10 3 * * 0 40
CUT BANK AP 0 0 0 * 2 5 6 6 1 * 0 0 20
GLASGOW 0 0 * 1 4 8 8 6 2 * 0 0 28
GREAT FALLS 0 * * 1 4 7 7 6 2 * 0 0 26
HAVRE 0 0 0 1 2 5 7 5 1 * 0 0 21
HELENA * * * 1 4 8 9 8 2 * * 0 32
KALISPELL 0 0 * 1 3 5 5 5 2 * * 0 22
LEWISTOWN 0 0 * * 3 8 9 8 2 * * 0 31
MILES CITY 0 0 * 1 4 8 7 6 2 * * * 28
MISSOULA * * * 1 4 6 6 6 2 * * 0 24
WHITEHALL 0 0 0 1 5 9 10 10 3 1 * * 39
NEVADA
ELKO * * * 1 3 4 5 5 2 1 * * 21
ELY * * 1 2 4 5 8 8 3 2 * * 33
FALLON NAS * * * 1 3 3 3 3 1 1 * 0 15
LAS VEGAS * * * 1 1 1 4 4 2 1 * * 13
LAS VEGAS-NELLIS AFB * 1 1 1 1 1 4 4 2 1 1 * 17
RENO 0 * * 1 2 3 4 3 1 1 0 0 14
TONOPAH TEST RANGE * 1 1 2 3 4 5 7 2 1 1 1 28
WINNEMUCCA 0 * * 1 2 3 3 3 2 1 * * 15
NEW MEXICO
ALAMOGORGO-HOLLOMAN 1 1 1 1 3 6 13 11 5 2 1 1 46
ALBUQUERQUE * * 1 2 4 5 11 11 5 2 1 * 41
CARLSBAD MUNI 0 * 1 2 5 7 10 8 4 2 * 0 39
CLAYTON * * 1 2 8 10 13 11 5 1 * * 52
CLOVIS-CANNON AFB 1 1 1 3 7 9 10 10 5 2 1 1 51
DEMING AP 0 1 * 1 1 3 11 14 3 2 1 0 36
FARMINGTON AP 0 * 1 2 3 3 8 7 3 2 1 * 29
GALLUP AP 0 * 1 2 3 5 16 14 5 3 * * 48
GRANTS MUNI * * * 1 4 5 14 15 5 2 * * 46
LAS CRUCES AP * * 1 1 3 5 12 12 4 2 * * 40
LAS VEGAS AP * * * 2 9 9 18 18 6 2 * * 64
ROSWELL * * 1 2 5 7 7 8 5 2 1 * 38
SANTA FE 0 * 1 1 6 5 14 16 5 2 1 0 51
TRUTH OR CONSEQUENCES 0 * 1 2 4 5 14 15 4 3 * 0 48
TUCUMCARI * * 1 2 8 9 13 10 4 2 * * 50
OREGON
ASTORIA 1 * * 1 * * * * 1 1 1 1 7
BAKER MUNI 0 0 0 1 2 4 4 3 2 0 0 0 16
BURNS 0 0 0 1 3 3 3 3 2 1 * 0 14
EUGENE * * * * 1 1 1 1 1 * * * 5
KLAMATH FALLS 0 0 1 1 2 3 2 3 1 1 * * 14
LA GRANDE 0 * * * 4 5 3 5 2 * 0 * 21
MEACHAM 0 0 * 1 4 3 3 4 1 * * 0 16
MEDFORD * * * 1 2 2 2 1 1 * * * 9
NORTH BEND AP 1 1 * 1 1 * * * 1 1 1 2 9
ONTARIO AP 0 0 * 1 3 3 2 2 1 * * 0 13
PENDLETON 0 * * 1 2 2 2 2 1 * * * 10
PORTLAND * * 1 1 2 1 1 1 1 * * * 7
SALEM * * * * 1 1 1 1 1 * * * 5
SEXTON SUMMIT * * * * 1 1 1 1 1 * 0 0 6
UTAH
BRYCE CANYON AP 0 * * 1 3 2 11 12 4 1 * 0 36
CEDAR CITY * 1 * 2 3 2 11 10 2 1 * * 31
MILFORD * * * 2 3 3 9 10 4 1 * * 32
OGDEN-HILL AFB 1 1 1 2 5 5 5 6 4 2 1 1 34
SALT LAKE CITY * 1 1 2 5 5 7 8 4 2 1 * 37
WENDOVER 0 * * 1 4 8 5 6 3 1 * * 29
WASHINGTON
HOQUIAM AP * * 1 * 1 * * * 1 1 1 * 6
OLYMPIA * * * 1 1 1 1 1 1 * * * 5
QUILLAYUTE 1 * * * * * 1 * 1 1 2 1 7
SEATTLE-TACOMA AP * * 1 1 1 1 1 1 1 * 1 * 7
SEATTLE URBAN SITE * * * * 1 1 1 1 1 1 * * 6
SPOKANE * * * 1 2 3 2 2 1 * * 0 11
STAMPEDE PASS 0 0 * * 1 2 1 2 1 * * 0 7
WALLA WALLA * * * 1 2 2 2 2 1 * * 0 11
YAKIMA 0 * * * 1 2 1 1 1 * 0 0 7
WYOMING
CASPER 0 * * 1 6 8 9 7 3 * * 0 36
CHEYENNE 0 * * 2 8 11 13 11 5 1 * 0 51
LANDER 0 0 * 1 5 7 10 7 3 * * 0 34
RAWLINS 0 0 * 1 5 6 7 6 3 1 0 0 28
ROCK SPRINGS * * * 1 5 5 8 7 3 1 0 0 31
SHERIDAN 0 * * 1 5 9 10 7 3 * * 0 34