S
M
T
W
T
F
S
30
80°
59°
31
80°
68°
1
84°
66°
2
69°
64°
3
87°
67°
4
85°
71°
5
79°
66°
6
75°
58°
7
79°
62°
8
82°
65°
9
86°
72°
10
86°
64°
11
79°
56°
12
78°
60°
13
81°
61°
14
83°
60°
15
80°
58°
16
76°
56°
17
73°
58°
18
76°
55°
19
74°
56°
20
78°
57°
21
75°
58°
22
69°
58°
23
69°
57°
24
70°
57°
25
71°
54°
26
74°
53°
27
70°
50°
28
70°
53°
29
75°
56°
30
76°
56°
1
75°
55°
2
74°
55°
3
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Great Notch
Great Notch's September 2026 forecast shows daily high temperatures ranging from 69° to 86°, with overnight lows between 50° and 72°. The average high for September is 76° with an average low of 58°. 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 Great Notch. See also: October | November | December.