S
M
T
W
T
F
S
26
60°
33°
27
62°
37°
28
63°
42°
29
68°
37°
30
73°
38°
1
77°
47°
2
79°
48°
3
80°
48°
4
80°
50°
5
79°
51°
6
82°
53°
7
82°
51°
8
80°
50°
9
77°
51°
10
79°
51°
11
76°
50°
12
75°
50°
13
74°
49°
14
81°
52°
15
72°
45°
16
72°
46°
17
70°
46°
18
68°
47°
19
68°
49°
20
67°
50°
21
66°
46°
22
65°
43°
23
66°
44°
24
71°
48°
25
74°
46°
26
76°
51°
27
77°
53°
28
76°
52°
29
74°
48°
30
73°
52°
31
69°
52°
1
69°
50°
2
71°
50°
3
76°
52°
4
73°
52°
5
73°
50°
6
76°
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 65° to 82°, with overnight lows between 43° and 54°. The average high for May is 74° 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.