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
100°
74°
10
98°
73°
11
99°
74°
12
100°
73°
13
97°
74°
14
96°
74°
15
96°
71°
16
95°
72°
17
96°
71°
18
93°
68°
19
93°
67°
20
92°
66°
21
91°
67°
22
90°
65°
23
86°
63°
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 63° and 74°. The average high for September is 92° with an average low of 68°. 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.
