S
M
T
W
T
F
S
26
45°
32°
27
52°
31°
28
52°
31°
29
55°
31°
30
60°
34°
1
62°
35°
2
66°
37°
3
74°
48°
4
73°
49°
5
72°
48°
6
69°
45°
7
69°
47°
8
68°
45°
9
67°
47°
10
67°
45°
11
66°
39°
12
60°
35°
13
61°
35°
14
66°
37°
15
71°
40°
16
72°
44°
17
73°
46°
18
73°
46°
19
74°
47°
20
73°
47°
21
72°
45°
22
73°
47°
23
70°
44°
24
71°
42°
25
75°
47°
26
76°
48°
27
77°
48°
28
76°
49°
29
76°
49°
30
77°
50°
31
74°
49°
1
76°
49°
2
77°
48°
3
78°
49°
4
78°
49°
5
72°
46°
6
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cache Junction
Cache Junction's May 2026 forecast shows daily high temperatures ranging from 52° to 78°, with overnight lows between 31° and 50°. The average high for May is 70° 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 Cache Junction. See also: June | July | August.