S
M
T
W
T
F
S
26
57°
47°
27
57°
46°
28
62°
44°
29
64°
46°
30
77°
48°
1
77°
46°
2
74°
50°
3
80°
48°
4
66°
49°
5
73°
44°
6
75°
43°
7
75°
45°
8
73°
44°
9
77°
44°
10
75°
43°
11
75°
44°
12
76°
43°
13
75°
41°
14
69°
40°
15
70°
44°
16
70°
44°
17
70°
41°
18
69°
45°
19
69°
43°
20
71°
44°
21
71°
42°
22
72°
44°
23
74°
44°
24
80°
47°
25
81°
47°
26
79°
46°
27
77°
45°
28
76°
46°
29
75°
47°
30
73°
46°
31
72°
47°
1
73°
42°
2
75°
45°
3
74°
44°
4
74°
43°
5
75°
47°
6
75°
44°
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 66° to 81°, with overnight lows between 40° and 50°. The average high for May is 74° with an average low of 45°. 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.