S
M
T
W
T
F
S
26
74°
37°
27
75°
40°
28
74°
41°
29
76°
43°
30
74°
45°
1
75°
46°
2
64°
42°
3
64°
41°
4
65°
40°
5
67°
42°
6
67°
44°
7
66°
39°
8
66°
38°
9
65°
44°
10
66°
44°
11
66°
43°
12
65°
43°
13
65°
42°
14
64°
43°
15
64°
43°
16
65°
44°
17
65°
44°
18
64°
42°
19
57°
42°
20
57°
41°
21
56°
36°
22
55°
35°
23
57°
34°
24
58°
35°
25
61°
35°
26
60°
36°
27
60°
38°
28
59°
40°
29
56°
37°
30
56°
41°
31
59°
40°
1
60°
39°
2
59°
38°
3
59°
33°
4
58°
34°
5
58°
38°
6
54°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Walwa
Walwa's May 2026 forecast shows daily high temperatures ranging from 54° to 76°, with overnight lows between 33° and 46°. The average high for May is 63° with an average low of 40°. 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 Walwa. See also: June | July | August.