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