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