Average Hours of Measurable Precipitation - Western Regional Climate Center (WRCC)
(*) = Less than 1/2 hour
Maximum 1-hour totals are based on data from top of the hour.  Maximum 60-minute totals will be greater.

                       MEAN MONTHLY AND ANNUAL NUMBER OF HOURS WITH MEASURABLE PRECIPITATION
                                  WITH PERCENT OF HOURS AND MAXIMUM 1-HOUR TOTALS

Click on a State: Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico,
Oregon, Pacific Islands, Utah,Washington,Wyoming | MAX | |PERCENT| 1-HR | YEARS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC | YEAR | HOURS | (IN) | ALASKA ANCHORAGE 1962-1999 27 39 32 28 23 37 52 65 73 58 38 39 | 511 | 5.8 | .54 | ANNETTE 1962-1999 188 171 167 153 125 98 97 105 150 218 200 203 | 1875 | 21.4 | 1.22 | COLD BAY 1962-1999 73 71 73 70 67 65 76 81 112 109 107 85 | 989 | 11.3 | 2.03 | FAIRBANKS 1962-1999 30 24 23 17 20 38 45 55 39 48 46 40 | 425 | 4.8 | .73 | JUNEAU 1962-1978 163 180 169 136 153 119 147 146 185 226 167 180 | 1971 | 22.5 | .49 | KING SALMON 1962-1999 48 38 46 48 48 53 64 85 81 66 52 51 | 680 | 7.8 | .88 | KODIAK 1984-1999 164 122 134 154 119 128 95 88 120 121 108 147 | 1500 | 17.1 | .61 | McGRATH 1962-1999 42 32 39 35 35 47 61 80 69 57 53 52 | 602 | 6.9 | .98 | ST. PAUL ISLAND 1962-1999 83 70 61 56 56 48 63 86 90 104 104 88 | 909 | 10.4 | .46 | YAKUTAT 1962-1999 200 196 202 184 170 131 148 167 218 283 222 228 | 2349 | 26.8 | 1.98 | ARIZONA FLAGSTAFF 1950-1999 56 51 58 35 17 8 29 34 25 26 35 49 | 422 | 4.8 | 2.25 | PHOENIX 1954-1999 19 16 17 5 3 2 9 11 8 10 11 19 | 130 | 1.5 | 1.35 | TUCSON 1948-1999 20 17 18 7 4 4 26 23 14 13 13 22 | 181 | 2.1 | 2.22 | WINSLOW 1949-1999 15 16 15 9 8 5 18 21 17 15 13 20 | 172 | 2.0 | 2.09 | YUMA 1951-1995 10 7 7 3 1 * 2 5 3 4 4 9 | 56 | .6 | 1.98 | CALIFORNIA BAKERSFIELD 1949-1999 27 26 25 14 5 1 * 1 4 5 15 18 | 143 | 1.6 | .86 | BISHOP 1954-1986 22 21 13 8 8 4 5 4 6 5 14 15 | 125 | 1.4 | .67 | BLUE CANYON 1948-1988 159 135 145 93 49 17 4 7 17 45 120 140 | 931 | 10.6 | .95 | EUREKA 1949-1999 123 104 109 62 42 19 6 11 16 44 98 117 | 750 | 8.6 | .92 | FRESNO 1948-1999 45 40 37 21 8 2 * 1 4 8 24 35 | 225 | 2.6 | 1.50 | LONG BEACH AP 1978-1999 43 37 38 11 3 2 1 1 4 7 16 24 | 187 | 2.1 | 1.36 | LOS ANGELES AP 1950-1999 41 35 30 15 4 1 1 1 4 5 19 26 | 181 | 2.1 | 1.57 | LOS ANGELES CITY 1948-1999 43 37 33 16 4 1 * 2 4 5 19 27 | 191 | 2.2 | 1.77 | MOUNT SHASTA CITY 1948-1986 122 107 99 60 35 20 5 11 18 41 90 103 | 711 | 8.1 | .93 | OAKLAND AP 1948-1984 64 48 45 27 9 3 1 2 4 15 38 55 | 311 | 3.5 | .93 | RED BLUFF 1948-1996 68 50 45 24 12 7 1 4 7 18 50 59 | 345 | 3.9 | 1.44 | SACRAMENTO 1948-1994 66 55 53 26 10 3 1 1 5 15 39 56 | 330 | 3.8 | 1.00 | SAN DIEGO AP 1948-1999 39 29 30 16 6 3 1 1 4 7 19 24 | 179 | 2.0 | 1.36 | SAN FRANCISCO AP 1948-1999 74 59 57 28 11 4 1 2 4 14 43 59 | 356 | 4.1 | .87 | SAN FRANCISCO CITY 1948-1999 77 62 59 28 12 4 1 3 5 16 49 64 | 380 | 4.3 | 1.40 | SANTA MARIA 1948-1999 44 43 41 20 6 2 1 1 4 8 25 33 | 228 | 2.6 | .81 | STOCKTON 1975-1995 47 48 53 23 7 3 2 2 7 12 32 41 | 277 | 3.2 | .86 | COLORADO ALAMOSA 1950-1999 13 12 16 16 17 14 21 25 19 18 14 15 | 199 | 2.3 | 1.39 | COLORADO SPRINGS 1975-1999 14 16 33 38 45 31 30 39 24 21 18 19 | 328 | 3.7 | 2.78 | DENVER 1948-1994 26 28 48 45 50 28 24 21 24 27 32 27 | 380 | 4.3 | 1.62 | GRAND JUNCTION 1948-1999 27 22 29 23 21 11 11 18 18 23 21 23 | 247 | 2.8 | 1.37 | PUEBLO 1954-1999 14 14 24 26 26 17 21 21 17 17 16 16 | 229 | 2.6 | 2.94 | HAWAII HILO 1962-1999 110 103 159 168 139 132 159 143 122 124 155 134 | 1648 | 18.8 | 4.17 | HONOLULU 1963-1999 37 27 31 25 17 11 16 11 21 36 34 41 | 307 | 3.5 | 2.28 | KAHULUI 1963-1999 56 42 49 37 17 10 17 15 11 20 41 49 | 364 | 4.2 | 2.96 | LIHUE 1963-1999 61 48 59 59 47 42 53 42 38 57 71 69 | 646 | 7.4 | 3.55 | IDAHO BOISE 1948-1999 58 41 40 33 31 21 6 7 13 22 48 51 | 371 | 4.2 | 1.10 | LEWISTON 1954-1999 49 36 38 39 41 33 15 15 21 29 44 45 | 405 | 4.6 | 1.04 | POCATELLO 1948-1999 61 48 59 59 47 42 53 42 38 57 71 69 | 370 | 4.2 | .78 | MONTANA BILLINGS 1948-1999 38 32 45 53 53 38 18 17 29 32 30 32 | 417 | 4.8 | 1.86 | GLASGOW 1958-1999 24 18 22 27 39 35 21 18 22 19 19 23 | 287 | 3.3 | 1.98 | GREAT FALLS 1948-1999 40 33 45 45 56 45 23 26 30 26 30 35 | 434 | 5.0 | 1.38 | HELENA 1948-1999 30 21 30 33 45 41 21 22 24 20 24 27 | 338 | 3.9 | 1.60 | KALISPELL 1954-1999 74 53 43 38 53 52 35 38 33 36 61 75 | 571 | 6.5 | 2.57 | MISSOULA 1948-1999 62 40 39 36 48 44 20 24 28 29 43 55 | 468 | 5.3 | 1.13 | NEVADA ELKO 1948-1981 45 32 34 26 31 20 7 9 11 15 30 41 | 301 | 3.5 | 3.47 | ELY 1948-1999 29 26 34 31 31 18 14 15 15 21 21 25 | 280 | 3.2 | 1.38 | LAS VEGAS 1949-1999 16 13 12 5 4 2 6 6 5 5 8 11 | 91 | 1.0 | 1.23 | RENO 1948-1999 35 30 26 13 16 10 5 6 9 11 22 29 | 212 | 2.4 | 1.00 | WINNEMUCCA 1949-1999 34 26 30 24 26 19 5 6 10 17 29 32 | 258 | 2.9 | .84 | NEW MEXICO ALBUQUERQUE 1948-1999 15 15 15 10 11 9 20 21 17 16 12 15 | 175 | 2.0 | 1.30 | CLAYTON 1948-1985 15 13 21 21 29 21 28 25 19 16 14 13 | 235 | 2.7 | 2.20 | OREGON ASTORIA 1953-1999 201 164 162 120 83 68 30 34 53 108 179 201 | 1403 | 16.0 | 1.44 | BURNS 1948-1999 56 40 42 25 29 19 7 10 13 24 47 55 | 367 | 4.2 | .93 | EUGENE 1948-1999 143 112 118 73 54 32 9 16 25 65 126 140 | 913 | 10.4 | 1.14 | MEACHAM 1948-1975 133 101 98 80 65 46 11 20 32 66 105 125 | 882 | 10.1 | .75 | MEDFORD 1949-1999 77 57 54 37 35 19 6 10 15 37 72 80 | 498 | 5.7 | 1.40 | PENDLETON 1949-1999 56 41 40 31 31 22 8 10 15 28 51 43 | 386 | 4.4 | .66 | PORTLAND 1949-1999 143 108 109 77 60 42 15 22 35 72 130 143 | 956 | 10.9 | .90 | SALEM 1948-1999 152 117 120 76 57 35 11 18 31 73 134 151 | 975 | 11.1 | 1.24 | SEXTON SUMMIT 1948-1999 133 103 110 64 49 26 7 13 25 59 120 131 | 840 | 9.6 | 1.87 | PACIFIC ISLANDS CHUUK 1996-1999 70 56 74 62 73 83 83 74 75 72 92 88 | 902 | 10.3 | 2.18 | GUAM 1984-1995 99 82 72 71 78 94 122 149 130 124 133 114 | 1268 | 14.5 | 4.26 | KOROR 1984-1999 117 98 88 76 103 129 117 99 82 96 91 103 | 1199 | 13.7 | 3.80 | MAJURO 1984-1999 89 67 80 90 102 102 100 93 93 93 97 104 | 1110 | 12.7 | 2.59 | PAGO PAGO 1984-1999 120 100 90 86 83 72 64 53 68 85 77 111 | 1009 | 11.5 | 4.22 | TRUK 1984-1993 99 67 87 103 96 106 103 121 89 100 101 92 | 1164 | 13.3 | 2.83 | WAKE ISLAND 1985-1997 28 29 36 30 30 32 44 56 59 58 43 38 | 483 | 5.5 | 2.27 | YAP 1993-1999 88 77 56 58 79 101 108 94 99 81 69 96 | 1006 | 11.5 | 2.79 | UTAH MILFORD 1948-1988 31 27 38 28 20 9 12 15 15 20 22 37 | 264 | 3.0 | .93 | SALT LAKE CITY 1948-1999 49 40 48 49 39 20 10 13 21 29 39 44 | 401 | 4.6 | 1.94 | WASHINGTON OLYMPIA 1954-1999 175 139 138 97 58 43 21 27 44 92 165 176 | 1175 | 13.4 | .82 | QUILLAYUTE 1966-1999 236 204 204 163 113 84 52 50 72 147 227 247 | 1799 | 20.5 | 1.01 | SEATTLE-TACOMA AP 1965-1999 137 107 104 74 48 37 21 25 40 71 124 134 | 822 | 9.4 | .63 | SPOKANE 1948-1999 77 59 53 36 39 29 14 15 20 35 71 83 | 531 | 6.1 | .75 | STAMPEDE PASS 1948-1999 254 205 204 163 118 103 51 59 86 141 223 260 | 1867 | 21.3 | .81 | WALLA WALLA 1948-1987 74 56 51 34 34 26 9 14 21 36 61 70 | 486 | 5.5 | 1.20 | YAKIMA 1949-1999 45 29 23 16 15 15 6 8 10 17 35 44 | 263 | 3.0 | .72 | WYOMING CASPER 1976-1999 32 33 40 45 52 30 18 15 23 33 37 32 | 390 | 4.4 | 1.74 | CHEYENNE 1976-1999 23 24 38 47 55 33 28 28 25 26 29 24 | 380 | 4.3 | 3.51 | LANDER 1976-1999 25 24 40 50 53 24 15 12 23 28 35 24 | 353 | 4.0 | .83 | SHERIDAN 1948-1999 39 36 49 59 55 40 18 16 33 33 36 34 | 452 | 5.2 | 1.21 |