S
M
T
W
T
F
S
30
69°
51°
31
69°
55°
1
70°
58°
2
67°
59°
3
75°
59°
4
76°
58°
5
74°
53°
6
71°
49°
7
67°
53°
8
73°
53°
9
69°
49°
10
68°
54°
11
68°
48°
12
69°
49°
13
68°
54°
14
72°
48°
15
64°
50°
16
62°
53°
17
63°
51°
18
62°
52°
19
68°
44°
20
63°
48°
21
66°
45°
22
68°
47°
23
67°
44°
24
68°
44°
25
67°
50°
26
68°
51°
27
65°
52°
28
67°
50°
29
68°
42°
30
60°
48°
1
65°
51°
2
67°
48°
3
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blue Knob
Blue Knob's September 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 42° and 59°. The average high for September is 68° 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 Blue Knob. See also: October | November | December.
