S
M
T
W
T
F
S
26
72°
38°
27
58°
43°
28
61°
46°
29
72°
40°
30
83°
46°
1
76°
49°
2
72°
49°
3
93°
50°
4
75°
54°
5
65°
53°
6
70°
48°
7
69°
49°
8
66°
52°
9
72°
49°
10
71°
49°
11
75°
49°
12
75°
50°
13
77°
49°
14
79°
51°
15
74°
50°
16
72°
50°
17
68°
51°
18
70°
49°
19
67°
48°
20
61°
43°
21
62°
50°
22
62°
44°
23
65°
46°
24
70°
48°
25
69°
49°
26
63°
44°
27
63°
45°
28
67°
50°
29
66°
53°
30
69°
52°
31
73°
54°
1
75°
54°
2
74°
50°
3
64°
46°
4
73°
50°
5
74°
47°
6
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Multnomah
Multnomah's May 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 43° and 54°. The average high for May is 69° with an average low of 49°. 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 Multnomah. See also: June | July | August.
