Average May Temperatures for Oregon

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

The tables give the normals for maximum and minimum monthly temperatures based on weather data collected from 1981 to 2010.

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 May temperatures
High °F	Low °F	Place	High °C	Low °C
60	46	Astoria	16	8
63	47	Brookings	17	8
62	47	Gold Beach	17	8
60	45	Honeyman State Park	16	7
59	46	Newport	15	8
59	47	North Bend	15	8
60	47	Port Orford	15	8
59	45	Seaside	15	7
62	44	Tillamook	17	6

Average daily temperatures in May
High °F	Low °F	Place	High °C	Low °C
67	44	Corvallis	20	7
67	44	Eugene	19	6
69	48	Portland	20	9
68	45	Salem	20	7

May temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
49	28	Crater Lake Park	10	-2
65	44	Detroit Lake Dam	19	6
53	35	Government Camp	12	2
62	36	Howard Prairie Lake Dam	17	2
72	40	Klamath Falls	22	4
65	37	Lakeview	18	3
71	42	McKenzie Bridge	22	6
73	46	Medford	23	8
64	43	Three Lynx	18	6
68	42	Toketee Falls	20	6
63	35	Wickiup Reservoir Dam	17	2

Average May temperatures
High °F	Low °F	Place	High °C	Low °C
65	36	Bend	18	2
69	45	Hood River	20	7
69	37	Madras	20	3
73	46	The Dalles	23	8

Average May temperatures
High °F	Low °F	Place	High °C	Low °C
63	33	Hart Mountain Antelope Refuge	17	1
69	44	Heppner	20	6
67	42	La Grande	19	6
74	42	Lake Owyhee Dam	23	5
67	39	Malheur Wildlife Refuge	19	4
75	44	Ontario	24	7
70	46	Pendleton	21	8
61	33	Seneca	16	0
69	41	Summer Lake	21	5
69	40	Whitehorse Ranch	20	4