S
M
T
W
T
F
S
26
58°
42°
27
55°
50°
28
54°
40°
29
62°
36°
30
68°
50°
1
56°
47°
2
64°
49°
3
82°
49°
4
61°
52°
5
59°
54°
6
57°
52°
7
59°
46°
8
59°
45°
9
70°
46°
10
62°
50°
11
68°
51°
12
65°
50°
13
60°
52°
14
57°
48°
15
55°
45°
16
56°
46°
17
61°
40°
18
62°
47°
19
62°
47°
20
61°
48°
21
69°
47°
22
61°
53°
23
59°
51°
24
66°
43°
25
57°
51°
26
62°
49°
27
61°
52°
28
62°
52°
29
58°
48°
30
60°
49°
31
63°
49°
1
63°
48°
2
74°
52°
3
63°
49°
4
63°
50°
5
61°
51°
6
61°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chinook
Chinook's May 2026 forecast shows daily high temperatures ranging from 58° to 74°, with overnight lows between 48° and 52°. The average high for May is 63° with an average low of 50°. 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 Chinook. See also: June | July | August.
