S
M
T
W
T
F
S
26
26°
18°
27
40°
18°
28
49°
19°
29
57°
25°
30
66°
29°
1
71°
38°
2
66°
41°
3
68°
34°
4
48°
23°
5
53°
27°
6
63°
38°
7
66°
40°
8
68°
40°
9
63°
36°
10
68°
42°
11
74°
41°
12
69°
41°
13
67°
38°
14
68°
42°
15
70°
40°
16
63°
40°
17
66°
45°
18
67°
46°
19
60°
45°
20
59°
46°
21
62°
46°
22
68°
47°
23
69°
48°
24
67°
47°
25
69°
48°
26
69°
48°
27
62°
47°
28
65°
48°
29
66°
48°
30
70°
49°
31
72°
51°
1
73°
52°
2
74°
51°
3
73°
52°
4
72°
51°
5
69°
51°
6
71°
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 48° to 74°, with overnight lows between 23° and 52°. The average high for May is 67° with an average low of 44°. 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.
