S
M
T
W
T
F
S
30
84°
53°
31
76°
51°
1
75°
53°
2
75°
57°
3
76°
52°
4
77°
59°
5
82°
58°
6
83°
51°
7
78°
52°
8
74°
50°
9
73°
49°
10
73°
56°
11
77°
49°
12
75°
49°
13
72°
48°
14
71°
55°
15
76°
54°
16
79°
47°
17
79°
45°
18
69°
45°
19
68°
47°
20
69°
48°
21
68°
48°
22
67°
45°
23
67°
50°
24
68°
50°
25
68°
49°
26
74°
51°
27
74°
44°
28
73°
42°
29
66°
44°
30
67°
49°
1
66°
50°
2
70°
47°
3
71°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Johnsonburg
Johnsonburg's September 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 41° and 59°. The average high for September is 73° with an average low of 50°. 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 Johnsonburg. See also: October | November | December.
