S
M
T
W
T
F
S
30
78°
58°
31
79°
62°
1
82°
57°
2
79°
55°
3
77°
54°
4
76°
55°
5
78°
57°
6
82°
61°
7
85°
64°
8
86°
63°
9
83°
55°
10
77°
55°
11
78°
62°
12
79°
56°
13
84°
52°
14
75°
51°
15
74°
53°
16
75°
60°
17
80°
59°
18
81°
52°
19
75°
59°
20
80°
59°
21
82°
58°
22
82°
59°
23
81°
59°
24
79°
58°
25
81°
58°
26
79°
57°
27
80°
57°
28
81°
56°
29
81°
56°
30
80°
57°
1
80°
49°
2
79°
46°
3
77°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Knob Noster
Knob Noster's September 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 46° and 64°. The average high for September is 80° with an average low of 56°. 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 Knob Noster. See also: October | November | December.