S
M
T
W
T
F
S
30
84°
64°
31
83°
64°
1
83°
65°
2
86°
64°
3
83°
68°
4
87°
67°
5
87°
66°
6
86°
62°
7
83°
66°
8
84°
65°
9
82°
66°
10
80°
64°
11
85°
65°
12
85°
65°
13
84°
64°
14
84°
64°
15
85°
65°
16
84°
64°
17
84°
63°
18
83°
62°
19
81°
61°
20
82°
57°
21
80°
61°
22
79°
62°
23
81°
60°
24
81°
58°
25
80°
56°
26
81°
59°
27
80°
60°
28
80°
58°
29
79°
57°
30
78°
56°
1
79°
57°
2
79°
57°
3
74°
58°
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 74° to 87°, with overnight lows between 56° and 68°. 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.
