S
M
T
W
T
F
S
30
86°
63°
31
89°
55°
1
87°
54°
2
79°
60°
3
80°
63°
4
88°
58°
5
88°
52°
6
79°
53°
7
78°
58°
8
82°
58°
9
81°
53°
10
77°
56°
11
76°
53°
12
76°
50°
13
75°
49°
14
75°
50°
15
76°
55°
16
76°
58°
17
83°
58°
18
84°
57°
19
83°
53°
20
77°
54°
21
83°
55°
22
75°
46°
23
83°
47°
24
72°
46°
25
72°
46°
26
70°
45°
27
82°
54°
28
82°
54°
29
Hist. Avg.
73°
48°
30
Hist. Avg.
72°
47°
1
Hist. Avg.
72°
47°
2
Hist. Avg.
72°
46°
3
Hist. Avg.
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Johnson
Johnson's September 2026 forecast shows daily high temperatures ranging from 70° to 89°, with overnight lows between 45° and 63°. The average high for September is 80° 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 Johnson. See also: October | November | December.
