S
M
T
W
T
F
S
30
80°
54°
31
77°
64°
1
87°
68°
2
70°
66°
3
88°
67°
4
87°
68°
5
81°
62°
6
80°
58°
7
80°
52°
8
N/A
9
86°
67°
10
85°
62°
11
79°
52°
12
80°
63°
13
79°
61°
14
82°
60°
15
81°
61°
16
79°
56°
17
78°
56°
18
75°
52°
19
71°
50°
20
72°
52°
21
73°
51°
22
72°
51°
23
70°
55°
24
71°
55°
25
67°
46°
26
68°
48°
27
73°
54°
28
76°
51°
29
70°
45°
30
71°
53°
1
71°
50°
2
67°
46°
3
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Green Knoll
Green Knoll's September 2026 forecast shows daily high temperatures ranging from 67° to 86°, with overnight lows between 45° and 67°. The average high for September is 75° 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 Green Knoll. See also: October | November | December.
