S
M
T
W
T
F
S
30
99°
63°
31
100°
73°
1
99°
67°
2
99°
77°
3
99°
77°
4
99°
75°
5
100°
77°
6
100°
75°
7
97°
75°
8
100°
73°
9
100°
81°
10
82°
73°
11
88°
70°
12
91°
70°
13
93°
72°
14
97°
73°
15
99°
77°
16
95°
77°
17
97°
77°
18
97°
75°
19
97°
75°
20
96°
67°
21
85°
64°
22
84°
56°
23
81°
53°
24
82°
57°
25
81°
58°
26
80°
58°
27
78°
56°
28
81°
56°
29
79°
58°
30
80°
55°
1
79°
56°
2
77°
50°
3
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shell Knob
Shell Knob's September 2026 forecast shows daily high temperatures ranging from 77° to 96°, with overnight lows between 50° and 67°. The average high for September is 81° with an average low of 57°. 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 Shell Knob. See also: October | November | December.
