S
M
T
W
T
F
S
30
99°
71°
31
99°
74°
1
100°
71°
2
104°
70°
3
104°
71°
4
96°
75°
5
96°
72°
6
96°
69°
7
99°
70°
8
99°
72°
9
96°
73°
10
93°
73°
11
96°
73°
12
100°
73°
13
97°
74°
14
96°
74°
15
96°
71°
16
95°
69°
17
96°
68°
18
88°
63°
19
83°
63°
20
87°
62°
21
86°
60°
22
90°
59°
23
86°
67°
24
81°
67°
25
90°
68°
26
90°
67°
27
88°
67°
28
84°
66°
29
88°
66°
30
89°
65°
1
89°
65°
2
88°
64°
3
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Junction
Junction's September 2026 forecast shows daily high temperatures ranging from 81° to 100°, with overnight lows between 59° and 74°. The average high for September is 90° with an average low of 67°. 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 Junction. See also: October | November | December.
