Precipitation Processor Division Normals (In Inches)

Columbia Above Coulee (43 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1961-1990 Normal Precipitation         1.78 2.74 3.10 3.02 2.09 1.79 1.60 2.13 2.35 1.60 1.68 1.72
1971-2000 Normal Precipitation         1.85 2.88 3.02 2.71 2.00 1.79 1.65 2.23 2.39 1.78 1.69 1.61

Blue River AP, BC
Brisco, BC
Castlegar, BC
Cranbrook AP, BC
Creston, BC
Elko, BC
Fauquier, BC
Duncan Lake Dam, BC
Fernie, BC
Glacier NP Rogers Pass, BC
Golden, BC
Kaslo, BC
Kimberley PCC, BC
Kooteney NP Westgate, BC
Mica Dam, BC
Nakusp, BC
New Denver, BC
Revelstoke AP, BC
Sparwood, BC
Bonners Ferry, ID
Cabinet Gorge, ID
Mullan, ID
Butte FAA AP, MT
Darby, MT
Drummond Aviation, MT
Kalispell WSO, MT
Libby 1NE RS, MT
Lincoln RS, MT
Missoula WSO AP, MT
Ovando, MT
Philpsburg RS, MT
Polebridge, MT
Polson Kerr Dam, MT
Round Butte 1NNE, MT
St. Regis, MT
Seeley Lake RS, MT
Summit, MT
Superior, MT
Trout Creek RS, MT
West Glacier, MT
Boundary Dam, WA
Colville AP, WA
Newport, WA

Snake River Above Ice Harbor (40 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1961-1990 Normal Precipitation                1.19 1.94 2.03 2.09 1.55 1.61 1.43 1.71 1.60 0.81 0.96 1.16
1971-2000 Normal Precipitation                1.20 1.88 1.97 1.98 1.61 1.65 1.46 1.89 1.46 0.92 0.86 1.06

Boise WFO AP, ID
Burley FAA, ID
Cambridge, ID
Challis, ID
Deadwood Dam, ID
Craters of Moon, ID
Elk City RS, ID
Garden Valley RS, ID
Gooding 1S, ID
Grace, ID
Grangeville, ID
Grouse, ID
Idaho Falls FAA AP, ID
Island Park, ID
Ketchum RS, ID
Lewiston AP, ID
MacKay RS, ID
McCall, ID
Mountain Home, ID
Oakley, ID
Palisades, ID
Payette, ID
Pierce, ID
Pocatello WFO, ID
Powell, ID
Riggins, ID
Salmon KSRA, ID
Mountain City RS, NV
Owyhee, NV
Baker FAA AP, OR
Drewsey, OR
McDermitt 26N, OR
Meacham, OR
Riverside, OR
Unity, OR
Afton, WY
Alta 1NNW, WY
Border 3N, WY
Moran 5WNW, WY
Snake River RS, WY

Columbia Above The Dalles (60 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1961-1990 Normal Precipitation             1.64 2.73 3.01 2.96 2.10 1.89 1.60 1.82 1.81 1.09 1.24 1.40
1971-2000 Normal Precipitation             1.66 2.83 2.98 2.79 2.11 1.92 1.64 1.97 1.79 1.24 1.19 1.30

Brisco, BC
Castlegar, BC
Creston, BC
Fauquier, BC
Fernie, BC
Glacier NP Rogers Pass, BC
Kaslo, BC
Kimberley PCC, BC
Mica Dam, BC
Penticton AP, BC
Princeton AP, BC
Revelstoke AP, BC
Boise WFO AP, ID
Bonners Ferry, ID
Burley FAA, ID
Cabinet Gorge, ID
Cambridge, ID
Challis, ID
Deadwood Dam, ID
Gooding 1S, ID
Grangeville, ID
Island Park, ID
Ketchum RS, ID
Mullan, ID
Palisades, ID
Pierce, ID
Pocatello WFO, ID
Powell, ID
Riggins, ID
Salmon KSRA, ID
Butte FAA AP, MT
Darby, MT
Kalispell WSO, MT
Libby 1NE RS, MT
Missoula WSO AP, MT
Ovando, MT
Polson Kerr Dam, MT
Summit, MT
Owyhee, NV
Baker FAA AP, OR
Dufur, OR
Hermiston 1SE, OR
John Day, OR
Meacham, OR
Ochoco RS, OR
Prairie City RS, OR
Redmond FAA, OR
Riverside, OR
Ukiah, OR
Colville AP, WA
Lake Wenatchee, WA
Mazama, WA
Omak 4N, WA
Spokane (ASOS), WA
Stampede Pass, WA
Stehekin 4NW, WA
Walla Walla, WA
Afton, WY
Moran 5WNW, WY
Snake River RS, WY

Columbia Above Castlegar (16 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation            2.80 4.03 4.29 4.01 2.83 2.42 2.00 2.26 2.86 2.63 2.43 2.25

Blue River AP, BC
Brisco, BC
Fauquier, BC
Duncan Lake Dam, BC
Glacier NP Mt Fdlty, BC
Glacier NP Rogers Pass, BC
Golden, BC
Kaslo, BC
Kooteney NP Westgate, BC
McCoulloch, BC
Mica Dam, BC
Nakusp, BC
Nelson NE, BC
Revelstoke AP, BC
Tete Jaune, BC
Vavenby, BC

Kootenai (16 stations)            Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation    1.85 3.09 3.16 2.77 1.94 1.78 1.75 2.22 2.46 1.90 1.69 1.62

Castlegar, BC
Cranbrook AP, BC
Creston, BC
Elko, BC
Duncan Lake Dam, BC
Fernie, BC
Kaslo, BC
Kimberley PCC, BC
Kooteney NP Westgate, BC
Nelson NE, BC
New Denver, BC
South Slocan, BC
Sparwood, BC
Bonners Ferry, ID
Eureka RS, MT
Libby 1NE RS, MT

Clark Fork (13 stations)          Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation    1.18 1.71 1.81 1.78 1.31 1.20 1.24 2.05 1.93 1.19 1.30 1.21

Butte FAA AP, MT
Darby, MT
DeBorgia, MT
Drummond Aviation, MT
Lincoln RS, MT
Missoula WSO AP, MT
Ovando, MT
Philpsburg RS, MT
Seeley Lake RS, MT
Stevensville, MT
Superior, MT
Thompson Falls PH, MT
Trout Creek RS, MT

Flathead (9 stations)             Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation    1.68 2.41 2.45 2.25 1.76 1.63 1.58 2.44 2.64 1.59 1.61 1.63

Hungry Horse Dam, MT
Kalispell WSO, MT
Polebridge, MT
Polson Kerr Dam, MT
Round Butte 1NNE, MT
Saint Ignatius, MT
Summit, MT
Swan Lake, MT
West Glacier, MT

Pend Oreille/ Spokane (10 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation         2.14 4.15 4.21 3.88 3.04 2.77 2.26 2.61 2.19 1.37 1.27 1.50

Avery RS No. 2
Cabinet Gorge, ID
Calder, ID
Kellogg, ID
Mullan, ID
Saint Maries 1W, ID
Sandpoint ES, ID
Boundary Dam, WA
Newport, WA
Spokane (ASOS), WA

Northeast Washington (7 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation       1.15 2.22 2.38 1.86 1.59 1.62 1.52 2.15 1.90 1.38 1.09 1.03

Boundary Dam, WA
Chewelah, WA
Colville AP, WA
Coulee Dam 1SW, WA
Laurier, WA
Northport, WA
Republic, WA

Okanogan (11 stations)            Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation    1.01 1.77 1.98 1.73 1.37 1.11 1.03 1.48 1.57 1.18 1.11 0.98

Kelowna, BC
McCulloch, BC
Oliver, BC
Penticton AP, BC
Princeton AP, BC
Summerland CDA, BC
Vernon Coldstream Ranch, BC
Conconully, WA
Mazama, WA
Omak 4N, WA
Winthrop 1WSW, WA

East Slopes Wash Casc. (14 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation          2.79 6.58 7.17 6.69 4.93 3.45 2.12 1.55 1.33 0.74 0.79 1.38

Bumping Lake, WA
Glenwood 2, WA
Lake Cle Elum, WA
Lake Kachess, WA
Lake Keechelus, WA
Lake Wenatchee, WA
Leavenworth 3S, WA
Mazama, WA
Mt Adams, WA
Rimrock Tieton Dam, WA
Stehekin 4NW, WA
Stevens Pass, WA
Tieton Intake, WA
Winthrop 1WSW, WA

Central Washington (8 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation     0.61 1.21 1.34 1.06 0.86 0.83 0.64 0.77 0.64 0.37 0.38 0.44

Coulee Dam 1SW, WA
Ephrata FAA AP, WA
Ice Harbor Dam, WA
Lind 3NE, WA
Othello 6ESE, WA
Prosser 4NE, WA
Wenatchee (WP), WA
Yakima (ASOS) AP, WA

Upper Snake (10 stations)         Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation    1.51 1.95 2.14 2.25 1.76 1.73 1.60 2.39 1.74 1.37 1.34 1.45

Ashton, ID
Driggs, ID
Island Park, ID
Palisades, ID
Tetonia ES, ID
Afton, WY
Bedford 3SE, WY
Bondurant, WY
Jackson, WY
Snake River RS, WY

Snake River Plain (13 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation     0.86 1.08 1.02 1.14 0.88 1.13 1.04 1.48 0.96 0.60 0.58 0.84

American Falls 3NW
Boise WFO AP, ID
Burley FAA, ID
Gooding 1S, ID
Grace, ID
Hollister, ID
Idaho Falls FAA AP, ID
Oakley, ID
Pocatello WFO, ID
Richfield, ID
Swan Falls PH, ID
Contact, NV
Border 3N, WY

Owyhee/ Malheur (14 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation    0.74 1.20 1.23 1.25 1.00 1.13 0.97 1.26 0.93 0.48 0.45 0.60

Mountain City RS, NV
Owyhee, NV
Paradise Valley 1NW, NV
Tuscarora, NV
Wild Horse Reservoir, NV
Beulah, OR
Danner, OR
Drewsey, OR
McDermitt 26N, OR
Owyhee Dam, OR
Riverside, OR
Rome 2NW, OR
Sheaville 1SE, OR
Unity, OR

Salmon/ Boise/ Payette (15 stations)    Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation          1.24 2.41 2.63 2.49 2.06 1.94 1.60 1.79 1.47 0.80 0.70 1.02

Anderson Dam, ID
Boise WFO AP, ID
Cascade 1NW, ID
Challis, ID
Council, ID
Deadwood Dam, ID
Dixie, ID
Garden Valley RS, ID
Idaho City, ID
McCall, ID
Middle Fork Lodge, ID
New Meadows RS, ID
Payette, ID
Riggins, ID
Salmon KSRA, ID

Burnt/ Grande Ronde (7 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation       1.05 1.98 1.94 1.85 1.40 1.39 1.36 1.68 1.40 0.76 0.81 0.82

Lewiston AP, ID
Halfway, OR
La Grande, OR
Rock Creek, OR
Union ES, OR
Unity, OR
Wallowa, OR

Clearwater (8 stations)            Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation     2.17 3.62 3.54 3.61 2.87 2.8  2.66 3.03 2.49 1.46 1.20 1.69

Dworshak Dam FH, ID
Elk City RS, ID
Elk River 1S, ID
Fenn RS, ID
Grangeville, ID
Lewiston AP, ID
Pierce, ID
Powell, ID

Southeast Washington (8 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation        1.45 2.54 2.39 2.24 1.95 1.91 1.67 1.89 1.21 0.75 0.84 0.93

Lewiston AP, ID
Moscow 5NE, ID
Potlatch 3NNE, ID
Lind 3NE, WA
Mill Creek, WA
Pomeroy, WA
Pullman 2NW, WA
Walla Walla, WA

Upper John Day (7 stations)        Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation     0.96 1.77 1.74 1.61 1.21 1.40 1.25 1.56 1.20 0.74 0.79 0.71

Austin 3S (Bates), OR
Dayville 8NW, OR
John Day, OR
Ochoco RS, OR
Paulina, OR
Prairie City RS, OR
Ukiah, OR

Umatilla/ Lwr John Day (9 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation          1.17 2.16 1.91 1.92 1.57 1.62 1.5  1.57 1.10 0.51 0.65 0.76

Condon, OR
Heppner, OR
Hermiston 1SE, OR
Meacham, OR
Mitchell 2NW, OR
Moro, OR
Ochoco RS, OR
Pendleton WFO AP, OR
Pilot Rock 1SE, OR

Upr Deschutes/ Crooked (8 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation          0.92 2.00 2.04 2.10 1.52 1.37 0.98 1.08 0.83 0.61 0.64 0.59

Bend, OR
Chemult, OR
Grizzly, OR
Ochoco RS, OR
Paulina, OR
Pelton Dam, OR
Redmond FAA, OR
Wickiup Dam, OR

Hood/ Lower Deschutes (7 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation         2.06 4.39 4.63 4.32 3.43 2.69 2.15 1.61 1.17 0.48 0.62 1.16

Antelope 1NW, OR
Dufur, OR
Government Camp, OR
Hood River ES, OR
Moro, OR
Parkdale 2NNE, OR
Pelton Dam, OR

NW Slope Wash Cascades (14 stations)    Oct  Nov   Dec   Jan   Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation          7.36 13.77 13.23 12.66 9.79 8.65 6.22 4.74 3.69 2.10 2.09 3.95

Cedar Lake, WA
Concrete (PPL), WA
Darrnington RS, WA
Diablo Dam, WA
Glacier RS, WA
Marblemount RS, WA
Palmer 3ESE, WA
Rainier-Paradise RS, WA
Skykomish 1ENE, WA
Snoqualmie Falls, WA
Snoqualmie Pass, WA
Stampede Pass, WA
Stevens Pass, WA
Verlot RS, WA

SW WA Cascades/ Cowlitz (10 stations)     Oct  Nov   Dec   Jan   Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation            5.53 11.05 11.08 10.32 8.41 7.08 5.35 3.79 2.96 1.39 1.54 3.11

Carson Fish Hatchery, WA
Cinebar, WA
Cougar 6E (Swift), WA
Glenoma 1W, WA
Rainier-Longmire NPS, WA
Longview, WA
Merwin Dam, WA
Mud Mountain Dam, WA
Olympia AP, WA
Packwood, WA

Willamette Valley (17 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation      4.29 9.32 9.44 8.58 7.25 6.39 4.84 3.53 2.25 0.83 1.07 2.13

Black Butte 1N, OR
Corvallis OSU, OR
Cougar Dam, OR
Detroit Dam, OR
Dorena Dam. OR
Estacada 2SE, OR
Eugene AP, OR
Government Camp, OR
Grand Ronde Tree Frm, OR
Gresham, OR
Lookout Point Dam, OR
Marion Forks FH, OR
Oakridge FH, OR
Salem, OR
Summit, OR
Three Lynx, OR
Toketee Falls, OR

Rogue/ Umpqua (10 stations)        Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation     2.56 5.78 5.72 5.11 4.52 4.13 2.78 1.98 1.00 0.47 0.71 1.16

Ashland, OR
Black Butte 1N, OR
Kerby 3NNW, OR
Medford AP, OR
Prospect 2SW, OR
Riddle, OR
Roseburg-KQEN, OR
Sexton Summit, OR
Toketee Falls, OR
Williams, OR

Klamath Basin (5 stations)         Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation     1.15 2.64 2.86 2.82 2.14 2.04 1.24 1.18 0.79 0.46 0.61 0.69

Round Grove (Bly 3NW), OR
Chemult, OR
Chiloquin 7NW, OR
Keno, OR
Klamath Falls 2SSW, OR

Lake County-Goose Lake (6 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation          0.85 1.45 1.42 1.42 1.21 1.29 1.17 1.36 1.02 0.51 0.52 0.68

Hart Mountain Refuge, OR
Lakeview 2NNW, OR
Paisley, OR
Silver Lake RS, OR
Summer Lake 1S, OR
Valley Falls, OR

Harney/ Malheur Basin (5 stations)     Oct  Nov  Dec  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep
1971-2000 Normal Precipitation         0.79 1.22 1.27 1.19 0.98 1.22 1.06 1.33 0.91 0.48 0.59 0.61

Burns AP, OR
Malheur Refuge HQ, OR
P-Ranch Refuge, OR
Seneca, OR
Squaw Butte ES, OR