S
M
T
W
T
F
S
30
80°
56°
31
79°
56°
1
69°
60°
2
74°
61°
3
76°
61°
4
81°
63°
5
73°
58°
6
73°
51°
7
80°
54°
8
80°
55°
9
79°
55°
10
85°
64°
11
77°
51°
12
77°
46°
13
69°
62°
14
72°
47°
15
71°
43°
16
80°
49°
17
79°
61°
18
78°
57°
19
66°
43°
20
57°
48°
21
68°
49°
22
66°
42°
23
64°
41°
24
67°
39°
25
67°
40°
26
60°
53°
27
58°
53°
28
57°
54°
29
65°
52°
30
72°
51°
1
75°
54°
2
76°
51°
3
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Townsend
Townsend's September 2026 forecast shows daily high temperatures ranging from 57° to 76°, with overnight lows between 50° and 54°. The average high for September is 67° with an average low of 52°. 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 Townsend. See also: October | November | December.