S
M
T
W
T
F
S
30
83°
65°
31
88°
69°
1
89°
69°
2
93°
71°
3
91°
68°
4
79°
67°
5
78°
65°
6
77°
54°
7
79°
54°
8
82°
55°
9
74°
67°
10
77°
55°
11
77°
50°
12
84°
62°
13
75°
49°
14
71°
45°
15
79°
59°
16
69°
66°
17
71°
55°
18
73°
56°
19
64°
61°
20
63°
54°
21
63°
52°
22
66°
55°
23
71°
55°
24
69°
54°
25
71°
53°
26
71°
53°
27
72°
57°
28
72°
55°
29
70°
52°
30
69°
49°
1
73°
53°
2
67°
52°
3
62°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Johnstown Township
Johnstown Township's September 2026 forecast shows daily high temperatures ranging from 62° to 73°, with overnight lows between 49° and 61°. The average high for September is 69° with an average low of 54°. 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 Johnstown Township. See also: October | November | December.
