S
M
T
W
T
F
S
30
74°
56°
31
73°
56°
1
61°
43°
2
58°
45°
3
53°
49°
4
52°
44°
5
58°
46°
6
62°
48°
7
68°
48°
8
75°
57°
9
84°
65°
10
80°
65°
11
75°
62°
12
73°
52°
13
63°
50°
14
70°
52°
15
69°
53°
16
64°
48°
17
59°
47°
18
66°
47°
19
73°
52°
20
71°
58°
21
76°
56°
22
80°
56°
23
83°
59°
24
82°
59°
25
74°
55°
26
72°
51°
27
70°
49°
28
71°
52°
29
69°
53°
30
68°
50°
1
69°
51°
2
72°
44°
3
74°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Johnsville
Johnsville's September 2026 forecast shows daily high temperatures ranging from 68° to 83°, with overnight lows between 44° and 59°. The average high for September is 74° with an average low of 53°. 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 Johnsville. See also: October | November | December.
