S
M
T
W
T
F
S
30
91°
49°
31
91°
51°
1
90°
51°
2
86°
50°
3
88°
50°
4
91°
49°
5
91°
50°
6
90°
50°
7
89°
49°
8
91°
50°
9
92°
50°
10
91°
49°
11
90°
49°
12
90°
48°
13
91°
49°
14
89°
49°
15
88°
48°
16
90°
48°
17
89°
47°
18
88°
47°
19
78°
48°
20
80°
45°
21
79°
41°
22
79°
40°
23
81°
44°
24
79°
41°
25
81°
43°
26
78°
40°
27
77°
40°
28
78°
38°
29
85°
42°
30
82°
45°
1
83°
43°
2
84°
44°
3
83°
38°
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 77° to 92°, with overnight lows between 38° and 51°. 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.
