Average Precipitation for Oregon in April

The tables below give monthly averages for rainfall plus snowfall during April 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 April
Days	Place	Inches	Millimetres
19	Astoria	5.8	147
16	Brookings	6.7	171
16	Gold Beach	7.1	180
17	Newport	5.5	140
17	North Bend	5.4	137
18	Port Orford	6.8	172
17	Seaside	6.6	167
20	Tillamook	7.5	190

Willamette Valley

April averages for total rainfall plus snowfall
Days	Place	Inches	Millimetres
18	Corvallis	3.3	84
16	Eugene	3.3	84
17	Portland	3.6	92
16	Salem	3.1	79

Cascade Mountains

Average amount of rain and snow in April
Days	Place	Inches	Millimetres
17	Crater Lake Park	6.2	156
20	Detroit Lake Dam	8.6	219
19	Government Camp	7.8	198
13	Grants Pass	2.3	59
13	Howard Prairie Lake Dam	2.7	68
9	Klamath Falls	1.1	27
11	Lakeview	1.5	39
11	Medford	1.5	38
16	Roseburg	3.1	78
19	Three Lynx	6.2	158
18	Toketee Falls	4.7	120
10	Wickiup Reservoir Dam	1.3	32

Central Oregon

Precipitation totals for April
Days	Place	Inches	Millimetres
6	Bend	0.8	20
13	Hood River	1.8	47
8	Madras	0.9	23
8	The Dalles	1.0	24

Eastern Oregon

Total precipitation during April
Days	Place	Inches	Millimetres
11	Heppner	1.5	37
10	La Grande	1.8	46
8	Lake Owyhee Dam	0.8	21
8	Ontario	0.9	22
10	Pendleton	1.2	31
11	Seneca	1.2	30
13	Summer Lake	1.2	30