Average July Temperatures for Oregon

Average temperatures for July 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 July temperatures
High °F	Low °F	Place	High °C	Low °C
67	54	Astoria	20	12
67	53	Brookings	19	12
68	53	Gold Beach	20	12
67	51	Honeyman State Park	19	10
64	51	Newport	18	11
66	54	North Bend	19	12
68	54	Port Orford	20	12
65	53	Seaside	18	12
68	50	Tillamook	20	10

Willamette Valley

Average daily temperatures in July
High °F	Low °F	Place	High °C	Low °C
83	52	Corvallis	28	11
84	52	Eugene	29	11
85	55	Lebanon	29	13
82	57	Portland	28	14
84	55	Salem	29	13

Cascade Mountains

July temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
69	41	Crater Lake Park	21	5
80	56	Detroit Lake Dam	27	13
69	48	Government Camp	21	9
91	56	Grants Pass	33	14
79	47	Howard Prairie Lake Dam	26	8
86	48	Klamath Falls	30	9
86	51	Lakeview	30	11
86	51	McKenzie Bridge	30	10
92	59	Medford	33	15
88	57	Roseburg	31	14
78	53	Three Lynx	26	11
86	52	Toketee Falls	30	11
83	47	Wickiup Reservoir Dam	28	9

Central Oregon

Average July temperatures
High °F	Low °F	Place	High °C	Low °C
84	49	Bend	29	9
82	56	Hood River	28	13
86	45	Madras	30	7
88	58	The Dalles	31	15

Eastern Oregon

Average July temperatures
High °F	Low °F	Place	High °C	Low °C
83	47	Hart Mountain Antelope Refuge	28	8
87	55	Heppner	30	13
86	55	La Grande	30	13
95	55	Lake Owyhee Dam	35	13
85	51	Malheur National Wildlife Refuge	29	10
93	60	Ontario	34	16
90	56	Pendleton	32	13
82	39	Seneca	28	4
90	49	Summer Lake	32	9

Average Temperatures for Oregon in July

Oregon Coast

Willamette Valley

Cascade Mountains

Central Oregon

Eastern Oregon

Reference

More Oregon Weather Information