S
M
T
W
T
F
S
30
80°
50°
31
61°
53°
1
62°
56°
2
58°
55°
3
59°
56°
4
59°
52°
5
66°
48°
6
66°
49°
7
77°
53°
8
85°
54°
9
84°
59°
10
69°
55°
11
63°
51°
12
62°
49°
13
65°
55°
14
76°
54°
15
66°
50°
16
66°
51°
17
61°
55°
18
64°
55°
19
86°
48°
20
87°
51°
21
81°
49°
22
82°
47°
23
83°
45°
24
83°
44°
25
85°
44°
26
84°
45°
27
83°
46°
28
81°
44°
29
80°
43°
30
79°
44°
1
81°
45°
2
80°
42°
3
78°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cave Junction
Cave Junction's September 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 42° and 51°. The average high for September is 82° 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 September weather will actually feel in Cave Junction. See also: October | November | December.
