S
M
T
W
T
F
S
26
60°
33°
27
62°
37°
28
63°
42°
29
68°
37°
30
73°
38°
1
76°
39°
2
80°
44°
3
80°
44°
4
80°
45°
5
75°
47°
6
79°
50°
7
77°
53°
8
73°
47°
9
74°
45°
10
80°
48°
11
76°
48°
12
76°
49°
13
77°
48°
14
80°
49°
15
80°
50°
16
74°
48°
17
73°
47°
18
74°
48°
19
75°
45°
20
66°
43°
21
72°
50°
22
68°
45°
23
72°
46°
24
75°
51°
25
77°
52°
26
75°
51°
27
70°
47°
28
75°
50°
29
74°
52°
30
76°
52°
31
77°
53°
1
78°
54°
2
78°
53°
3
69°
46°
4
67°
48°
5
74°
52°
6
73°
53°
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 66° to 80°, with overnight lows between 43° and 54°. The average high for May is 75° 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 Spokane. See also: June | July | August.