S
M
T
W
T
F
S
30
88°
47°
31
85°
44°
1
84°
45°
2
85°
47°
3
88°
48°
4
86°
47°
5
85°
47°
6
84°
43°
7
89°
47°
8
91°
49°
9
91°
50°
10
92°
50°
11
91°
49°
12
91°
49°
13
90°
48°
14
87°
46°
15
84°
47°
16
86°
47°
17
90°
48°
18
91°
49°
19
90°
48°
20
89°
48°
21
89°
47°
22
88°
47°
23
88°
46°
24
84°
47°
25
87°
47°
26
87°
46°
27
86°
46°
28
82°
45°
29
80°
45°
30
83°
44°
1
78°
40°
2
76°
35°
3
75°
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 75° to 92°, with overnight lows between 35° and 50°. The average high for September is 86° with an average low of 46°. 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.
