S
M
T
W
T
F
S
30
92°
62°
31
93°
63°
1
94°
63°
2
93°
62°
3
92°
63°
4
97°
63°
5
99°
64°
6
95°
61°
7
91°
61°
8
91°
58°
9
90°
60°
10
92°
63°
11
98°
60°
12
96°
60°
13
96°
63°
14
99°
65°
15
97°
64°
16
95°
60°
17
93°
63°
18
95°
62°
19
96°
60°
20
95°
62°
21
95°
62°
22
92°
61°
23
89°
57°
24
88°
62°
25
91°
59°
26
92°
58°
27
89°
60°
28
90°
61°
29
92°
60°
30
92°
59°
1
87°
59°
2
90°
57°
3
83°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Swift Trail Junction
Swift Trail Junction's September 2026 forecast shows daily high temperatures ranging from 83° to 99°, with overnight lows between 55° and 65°. The average high for September is 93° with an average low of 61°. 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 Swift Trail Junction. See also: October | November | December.
