S
M
T
W
T
F
S
26
62°
43°
27
63°
42°
28
65°
46°
29
68°
44°
30
70°
46°
1
69°
45°
2
55°
39°
3
57°
39°
4
62°
41°
5
66°
44°
6
67°
46°
7
68°
44°
8
68°
46°
9
59°
40°
10
58°
41°
11
58°
39°
12
60°
40°
13
65°
44°
14
69°
47°
15
60°
45°
16
61°
48°
17
62°
44°
18
65°
44°
19
71°
51°
20
66°
48°
21
72°
51°
22
67°
50°
23
62°
47°
24
62°
44°
25
63°
43°
26
65°
45°
27
70°
49°
28
73°
52°
29
74°
53°
30
72°
49°
31
72°
50°
1
75°
54°
2
71°
51°
3
75°
54°
4
78°
55°
5
75°
47°
6
69°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Spokane International Airport
Spokane International Airport's May 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 39° and 55°. The average high for May is 66° with an average low of 46°. 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 International Airport. See also: June | July | August.
