S
M
T
W
T
F
S
30
88°
50°
31
84°
48°
1
87°
48°
2
84°
47°
3
87°
46°
4
95°
49°
5
93°
48°
6
88°
46°
7
90°
45°
8
88°
45°
9
89°
46°
10
83°
46°
11
82°
42°
12
84°
49°
13
84°
46°
14
89°
48°
15
90°
49°
16
89°
48°
17
84°
45°
18
80°
42°
19
80°
41°
20
79°
40°
21
80°
40°
22
79°
42°
23
80°
43°
24
79°
42°
25
78°
43°
26
77°
44°
27
76°
39°
28
76°
38°
29
77°
38°
30
76°
42°
1
75°
43°
2
75°
38°
3
76°
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 75° to 95°, with overnight lows between 38° and 50°. The average high for September is 83° with an average low of 44°. 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.
