S
M
T
W
T
F
S
26
41°
19°
27
49°
15°
28
58°
24°
29
61°
21°
30
69°
21°
1
77°
27°
2
68°
36°
3
77°
32°
4
58°
26°
5
52°
24°
6
68°
17°
7
72°
40°
8
80°
32°
9
69°
47°
10
80°
36°
11
73°
40°
12
77°
34°
13
92°
45°
14
69°
46°
15
66°
38°
16
57°
37°
17
48°
33°
18
55°
29°
19
67°
34°
20
60°
35°
21
63°
33°
22
71°
31°
23
78°
40°
24
85°
45°
25
89°
46°
26
94°
50°
27
91°
58°
28
93°
52°
29
83°
59°
30
73°
53°
31
59°
45°
1
61°
42°
2
70°
46°
3
68°
49°
4
74°
51°
5
81°
53°
6
88°
52°
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 59° to 88°, with overnight lows between 42° and 59°. The average high for May is 73° 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.
