S
M
T
W
T
F
S
30
89°
46°
31
87°
48°
1
87°
48°
2
92°
47°
3
90°
47°
4
91°
49°
5
90°
45°
6
84°
46°
7
91°
49°
8
86°
46°
9
84°
48°
10
83°
46°
11
89°
50°
12
90°
50°
13
90°
49°
14
89°
48°
15
86°
47°
16
85°
48°
17
89°
48°
18
89°
47°
19
87°
47°
20
88°
48°
21
89°
49°
22
88°
48°
23
87°
48°
24
84°
47°
25
83°
47°
26
81°
46°
27
82°
46°
28
83°
45°
29
84°
46°
30
85°
47°
1
85°
46°
2
77°
45°
3
74°
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 74° to 92°, with overnight lows between 42° and 50°. The average high for September is 86° with an average low of 47°. 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.
