S
M
T
W
T
F
S
30
89°
68°
31
88°
68°
1
88°
68°
2
85°
66°
3
88°
65°
4
89°
68°
5
89°
69°
6
88°
67°
7
86°
62°
8
82°
63°
9
84°
61°
10
84°
60°
11
83°
60°
12
84°
61°
13
85°
62°
14
86°
64°
15
85°
65°
16
85°
64°
17
82°
58°
18
80°
57°
19
77°
58°
20
77°
62°
21
78°
57°
22
76°
60°
23
77°
61°
24
76°
62°
25
79°
62°
26
81°
61°
27
80°
61°
28
78°
60°
29
78°
59°
30
75°
60°
1
74°
59°
2
76°
53°
3
73°
52°
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 73° to 89°, with overnight lows between 52° and 69°. The average high for September is 82° with an average low of 62°. 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.
