S
M
T
W
T
F
S
26
63°
44°
27
65°
45°
28
69°
44°
29
68°
47°
30
66°
46°
1
65°
46°
2
62°
45°
3
61°
46°
4
64°
47°
5
65°
45°
6
64°
41°
7
68°
44°
8
65°
49°
9
61°
49°
10
62°
48°
11
63°
46°
12
62°
42°
13
62°
42°
14
63°
44°
15
66°
48°
16
69°
51°
17
63°
51°
18
64°
50°
19
65°
50°
20
69°
48°
21
70°
48°
22
66°
48°
23
63°
46°
24
64°
45°
25
67°
48°
26
72°
51°
27
70°
51°
28
73°
50°
29
74°
53°
30
65°
49°
31
64°
44°
1
64°
46°
2
65°
45°
3
74°
52°
4
73°
54°
5
68°
47°
6
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oregon City
Oregon City's May 2026 forecast shows daily high temperatures ranging from 61° to 74°, with overnight lows between 41° and 54°. The average high for May is 66° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Oregon City. See also: June | July | August.
