S
M
T
W
T
F
S
26
71°
40°
27
71°
39°
28
70°
38°
29
64°
36°
30
65°
37°
1
65°
38°
2
66°
37°
3
65°
36°
4
65°
37°
5
66°
36°
6
67°
36°
7
69°
38°
8
73°
42°
9
76°
45°
10
76°
45°
11
75°
44°
12
72°
44°
13
72°
43°
14
73°
42°
15
72°
42°
16
69°
39°
17
70°
39°
18
74°
43°
19
74°
42°
20
71°
44°
21
70°
43°
22
68°
47°
23
65°
41°
24
69°
40°
25
71°
40°
26
72°
41°
27
79°
47°
28
79°
46°
29
76°
44°
30
75°
40°
31
75°
44°
1
74°
45°
2
77°
46°
3
81°
47°
4
80°
49°
5
83°
50°
6
84°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cave Junction
Cave Junction's May 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 36° and 50°. The average high for May is 72° with an average low of 42°. 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 Cave Junction. See also: June | July | August.