S
M
T
W
T
F
S
30
88°
46°
31
84°
48°
1
72°
48°
2
64°
49°
3
84°
46°
4
81°
45°
5
87°
48°
6
88°
48°
7
90°
47°
8
91°
48°
9
87°
49°
10
89°
46°
11
88°
45°
12
84°
49°
13
84°
46°
14
89°
49°
15
87°
48°
16
82°
44°
17
81°
42°
18
82°
43°
19
81°
43°
20
80°
47°
21
80°
41°
22
81°
41°
23
78°
42°
24
78°
41°
25
77°
42°
26
77°
39°
27
76°
44°
28
76°
39°
29
77°
43°
30
73°
45°
1
74°
43°
2
75°
38°
3
76°
40°
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 64° to 91°, with overnight lows between 38° and 49°. The average high for September is 81° 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.
