S
M
T
W
T
F
S
30
91°
70°
31
93°
70°
1
96°
70°
2
96°
73°
3
95°
72°
4
94°
72°
5
95°
72°
6
92°
70°
7
87°
68°
8
88°
70°
9
87°
69°
10
93°
68°
11
93°
70°
12
89°
69°
13
89°
66°
14
87°
67°
15
88°
62°
16
79°
65°
17
78°
63°
18
76°
65°
19
77°
65°
20
78°
64°
21
81°
64°
22
79°
63°
23
82°
63°
24
80°
62°
25
76°
63°
26
79°
63°
27
80°
57°
28
74°
53°
29
72°
52°
30
72°
52°
1
74°
54°
2
73°
59°
3
72°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Johns Creek
Johns Creek's September 2026 forecast shows daily high temperatures ranging from 72° to 96°, with overnight lows between 52° and 73°. The average high for September is 83° with an average low of 64°. 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 Johns Creek. See also: October | November | December.
