S
M
T
W
T
F
S
30
86°
73°
31
86°
75°
1
89°
73°
2
91°
77°
3
88°
77°
4
90°
76°
5
91°
74°
6
84°
72°
7
84°
71°
8
85°
70°
9
85°
71°
10
89°
75°
11
88°
72°
12
89°
72°
13
86°
73°
14
87°
71°
15
88°
67°
16
85°
70°
17
84°
69°
18
80°
69°
19
81°
68°
20
81°
69°
21
82°
69°
22
83°
68°
23
84°
68°
24
80°
68°
25
81°
68°
26
83°
67°
27
83°
67°
28
84°
62°
29
76°
59°
30
76°
59°
1
78°
65°
2
78°
65°
3
77°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Garden City
Garden City's September 2026 forecast shows daily high temperatures ranging from 76° to 91°, with overnight lows between 59° and 77°. The average high for September is 84° with an average low of 69°. 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 Garden City. See also: October | November | December.