S
M
T
W
T
F
S
26
79°
59°
27
86°
63°
28
63°
52°
29
66°
50°
30
64°
46°
1
64°
45°
2
64°
43°
3
79°
41°
4
79°
63°
5
64°
45°
6
61°
45°
7
68°
39°
8
77°
46°
9
82°
52°
10
72°
50°
11
77°
45°
12
79°
50°
13
77°
59°
14
77°
54°
15
82°
59°
16
88°
70°
17
82°
66°
18
84°
72°
19
75°
61°
20
64°
57°
21
75°
59°
22
68°
61°
23
77°
59°
24
79°
61°
25
81°
61°
26
N/A
27
81°
64°
28
74°
64°
29
73°
60°
30
79°
61°
31
76°
53°
1
75°
54°
2
79°
55°
3
75°
58°
4
78°
57°
5
81°
59°
6
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Spokane
Spokane's May 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 53° and 64°. The average high for May is 78° with an average low of 59°. 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.