S
M
T
W
T
F
S
30
106°
81°
31
86°
73°
1
99°
76°
2
100°
81°
3
99°
81°
4
99°
82°
5
100°
82°
6
102°
81°
7
102°
84°
8
104°
86°
9
104°
84°
10
104°
82°
11
102°
86°
12
102°
85°
13
102°
84°
14
101°
79°
15
100°
81°
16
98°
81°
17
99°
78°
18
101°
76°
19
103°
75°
20
101°
74°
21
100°
73°
22
97°
73°
23
98°
75°
24
97°
74°
25
97°
66°
26
96°
70°
27
98°
70°
28
94°
65°
29
92°
65°
30
94°
66°
1
96°
68°
2
94°
66°
3
90°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gilbert
Gilbert's September 2026 forecast shows daily high temperatures ranging from 90° to 103°, with overnight lows between 61° and 85°. The average high for September is 98° with an average low of 73°. 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 Gilbert. See also: October | November | December.
