S
M
T
W
T
F
S
30
85°
49°
31
86°
48°
1
87°
49°
2
86°
50°
3
86°
50°
4
87°
48°
5
85°
47°
6
84°
48°
7
91°
44°
8
86°
41°
9
87°
41°
10
86°
40°
11
85°
41°
12
86°
44°
13
85°
46°
14
91°
49°
15
90°
45°
16
87°
44°
17
88°
50°
18
87°
49°
19
86°
44°
20
88°
46°
21
88°
40°
22
84°
40°
23
82°
44°
24
81°
45°
25
80°
43°
26
83°
43°
27
82°
42°
28
79°
46°
29
84°
45°
30
80°
48°
1
83°
47°
2
86°
46°
3
84°
45°
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 79° to 91°, with overnight lows between 40° and 50°. The average high for September is 85° 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.
