Average Precipitation for Oregon in October





The tables below give monthly averages for rainfall plus snowfall during October at cities, towns and lakes in Oregon.

Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The precipitation totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each region of the state: Oregon Coast, Willamette Valley, Cascade Mountains, Central Oregon and Eastern Oregon.

Oregon Coast

Average monthly precipitation in October
Days Place Inches Milli­metres
17 Astoria 6.7 171
11 Brookings 6.0 151
12 Gold Beach 4.9 125
15 Newport 5.6 141
13 North Bend 4.2 108
12 Port Orford 4.8 122
15 Seaside 6.6 168
18 Tillamook 7.8 198

Willamette Valley

October averages for total rainfall plus snowfall
Days Place Inches Milli­metres
15 Corvallis 3.5 89
12 Eugene 3.2 81
15 Portland 4.0 101
13 Salem 3.5 88

Cascade Mountains

Average amount of rain and snow in October
Days Place Inches Milli­metres
11 Crater Lake Park 4.8 122
14 Detroit Lake Dam 8.0 202
13 Government Camp 8.4 214
8 Grants Pass 2.1 53
8 Howard Prairie Lake Dam 2.0 51
6 Klamath Falls 0.7 19
6 Lakeview 1.0 24
8 Medford 1.2 31
11 Roseburg 2.5 63
15 Three Lynx 6.2 158
12 Toketee Falls 3.8 96
8 Wickiup Reservoir Dam 1.5 37

Central Oregon

Precipitation totals for October
Days Place Inches Milli­metres
4 Bend 0.7 17
11 Hood River 2.6 67
6 Madras 0.9 24
8 The Dalles 1.1 27

Eastern Oregon

Total precipitation during October
Days Place Inches Milli­metres
9 Heppner 1.2 30
8 La Grande 1.6 40
5 Lake Owyhee Dam 0.5 14
4 Ontario 0.8 20
8 Pendleton 1.1 28
8 Seneca 1.1 27
7 Summer Lake 0.9 24
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Oregon Precipitation
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