S
M
T
W
T
F
S
26
68°
37°
27
71°
40°
28
71°
42°
29
70°
40°
30
73°
42°
1
73°
43°
2
69°
43°
3
73°
44°
4
74°
44°
5
67°
39°
6
66°
37°
7
66°
36°
8
68°
38°
9
68°
39°
10
69°
40°
11
73°
42°
12
75°
44°
13
74°
45°
14
69°
39°
15
70°
38°
16
70°
41°
17
72°
42°
18
72°
42°
19
72°
43°
20
74°
43°
21
73°
39°
22
71°
42°
23
74°
40°
24
72°
40°
25
71°
42°
26
74°
43°
27
72°
44°
28
73°
46°
29
74°
45°
30
73°
45°
31
77°
43°
1
81°
43°
2
77°
42°
3
73°
41°
4
74°
41°
5
74°
44°
6
77°
48°
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 36° and 48°. 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.