S
M
T
W
T
F
S
30
65°
40°
31
64°
40°
1
57°
38°
2
61°
40°
3
63°
40°
4
61°
38°
5
61°
40°
6
54°
39°
7
53°
39°
8
54°
38°
9
55°
37°
10
52°
29°
11
51°
28°
12
51°
28°
13
52°
29°
14
53°
30°
15
52°
31°
16
52°
30°
17
50°
35°
18
56°
34°
19
52°
34°
20
46°
34°
21
46°
24°
22
45°
27°
23
46°
30°
24
45°
26°
25
48°
21°
26
45°
19°
27
38°
22°
28
40°
22°
29
40°
21°
30
41°
19°
1
37°
18°
2
35°
18°
3
37°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tetlin Junction
Tetlin Junction's September 2026 forecast shows daily high temperatures ranging from 35° to 65°, with overnight lows between 18° and 40°. The average high for September is 50° with an average low of 30°. 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 Tetlin Junction. See also: October | November | December.