S
M
T
W
T
F
S
26
73°
52°
27
73°
51°
28
72°
51°
29
70°
50°
30
63°
50°
1
65°
52°
2
66°
52°
3
68°
48°
4
71°
50°
5
72°
49°
6
74°
53°
7
75°
54°
8
76°
55°
9
76°
55°
10
77°
54°
11
72°
55°
12
72°
55°
13
75°
56°
14
76°
53°
15
71°
51°
16
73°
52°
17
77°
55°
18
79°
51°
19
76°
50°
20
74°
50°
21
76°
54°
22
75°
57°
23
73°
58°
24
82°
59°
25
83°
60°
26
83°
60°
27
84°
59°
28
85°
61°
29
84°
60°
30
84°
55°
31
83°
54°
1
81°
60°
2
82°
61°
3
84°
61°
4
85°
60°
5
86°
54°
6
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Spokane
Spokane's May 2026 forecast shows daily high temperatures ranging from 63° to 86°, with overnight lows between 48° and 61°. The average high for May is 76° with an average low of 55°. 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 Spokane. See also: June | July | August.