S
M
T
W
T
F
S
26
70°
38°
27
66°
42°
28
65°
38°
29
68°
43°
30
65°
43°
1
66°
42°
2
66°
41°
3
68°
42°
4
70°
42°
5
72°
44°
6
67°
44°
7
70°
43°
8
71°
44°
9
70°
44°
10
68°
40°
11
68°
40°
12
67°
41°
13
69°
40°
14
71°
41°
15
71°
44°
16
69°
41°
17
68°
41°
18
70°
42°
19
78°
46°
20
79°
47°
21
79°
47°
22
74°
46°
23
72°
45°
24
73°
44°
25
73°
45°
26
77°
47°
27
82°
50°
28
84°
47°
29
83°
47°
30
79°
46°
31
80°
46°
1
80°
45°
2
82°
48°
3
84°
46°
4
84°
46°
5
85°
43°
6
84°
46°
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 65° to 85°, with overnight lows between 38° and 50°. The average high for May is 74° 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 Cave Junction. See also: June | July | August.