S
M
T
W
T
F
S
26
66°
38°
27
69°
38°
28
73°
40°
29
77°
42°
30
73°
45°
1
69°
41°
2
72°
42°
3
73°
44°
4
72°
43°
5
70°
42°
6
75°
42°
7
75°
42°
8
74°
43°
9
73°
41°
10
69°
43°
11
72°
41°
12
74°
43°
13
77°
45°
14
78°
46°
15
78°
46°
16
77°
45°
17
72°
42°
18
76°
44°
19
71°
42°
20
71°
45°
21
72°
45°
22
71°
40°
23
73°
43°
24
80°
47°
25
80°
47°
26
79°
46°
27
80°
45°
28
75°
43°
29
75°
40°
30
73°
42°
31
73°
40°
1
74°
41°
2
81°
47°
3
80°
47°
4
74°
46°
5
75°
44°
6
77°
45°
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 38° and 47°. The average high for May is 74° with an average low of 43°. 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.