Average Temperatures for Oregon in August





Average temperatures for August at cities, towns, parks and lakes throughout Oregon are listed below in degrees Fahrenheit and Celsius.

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

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Oregon Coast

Average August temperatures
High °F Low °F Place High °C Low °C
69 54 Astoria 20 12
66 54 Brookings 19 12
69 53 Gold Beach 20 12
67 51 Honeyman State Park 20 11
64 52 Newport 18 11
67 54 North Bend 20 12
68 54 Port Orford 20 12
66 54 Seaside 19 12
69 50 Tillamook 21 10

Willamette Valley

Average daily temperatures in August
High °F Low °F Place High °C Low °C
84 51 Corvallis 29 11
84 52 Eugene 29 11
86 56 Lebanon 30 13
82 57 Portland 28 14
84 55 Salem 29 13

Cascade Mountains

August temperatures: daily averages
High °F Low °F Place High °C Low °C
69 42 Crater Lake Park 21 5
81 56 Detroit Lake Dam 27 13
70 48 Government Camp 21 9
91 55 Grants Pass 33 13
79 46 Howard Prairie Lake Dam 26 8
85 47 Klamath Falls 29 8
85 49 Lakeview 29 9
86 49 McKenzie Bridge 30 10
91 58 Medford 33 14
89 56 Roseburg 31 13
79 52 Three Lynx 26 11
85 51 Toketee Falls 29 10
82 46 Wickiup Reservoir Dam 28 8

Central Oregon

Average August temperatures
High °F Low °F Place High °C Low °C
83 48 Bend 29 9
82 55 Hood River 28 13
85 44 Madras 30 7
89 57 The Dalles 31 14

Eastern Oregon

Average August temperatures
High °F Low °F Place High °C Low °C
83 46 Hart Mountain Antelope Refuge 28 8
86 55 Heppner 30 13
87 53 La Grande 31 12
93 53 Lake Owyhee Dam 34 12
83 48 Malheur National Wildlife Refuge 28 9
91 57 Ontario 33 14
90 54 Pendleton 32 12
82 35 Seneca 28 2
89 47 Summer Lake 32 8
Reference

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

Oregon Temperatures
Back to Top