S
M
T
W
T
F
S
26
54°
27°
27
56°
31°
28
59°
34°
29
66°
32°
30
70°
36°
1
71°
37°
2
71°
36°
3
70°
35°
4
70°
37°
5
73°
36°
6
67°
37°
7
68°
37°
8
66°
35°
9
64°
34°
10
62°
35°
11
57°
30°
12
58°
31°
13
63°
33°
14
69°
38°
15
71°
41°
16
72°
41°
17
62°
33°
18
68°
38°
19
70°
40°
20
70°
41°
21
67°
42°
22
60°
35°
23
61°
35°
24
67°
37°
25
72°
42°
26
74°
43°
27
73°
43°
28
62°
34°
29
71°
42°
30
72°
41°
31
65°
38°
1
63°
35°
2
68°
40°
3
74°
45°
4
74°
45°
5
69°
43°
6
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wallowa
Wallowa's May 2026 forecast shows daily high temperatures ranging from 54° to 74°, with overnight lows between 27° and 45°. The average high for May is 67° with an average low of 37°. 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 Wallowa. See also: June | July | August.