S
M
T
W
T
F
S
30
97°
75°
31
99°
75°
1
100°
75°
2
93°
74°
3
93°
74°
4
86°
72°
5
89°
72°
6
91°
72°
7
87°
71°
8
89°
71°
9
88°
70°
10
91°
68°
11
90°
71°
12
89°
70°
13
88°
67°
14
88°
68°
15
87°
65°
16
81°
68°
17
81°
68°
18
80°
68°
19
81°
68°
20
81°
67°
21
83°
68°
22
82°
67°
23
84°
67°
24
84°
66°
25
80°
67°
26
82°
66°
27
81°
62°
28
77°
58°
29
76°
56°
30
77°
56°
1
76°
59°
2
78°
62°
3
76°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Johnstown East
Johnstown East's September 2026 forecast shows daily high temperatures ranging from 76° to 93°, with overnight lows between 56° and 74°. The average high for September is 84° with an average low of 67°. 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 East. See also: October | November | December.