S
M
T
W
T
F
S
30
109°
81°
31
108°
80°
1
107°
79°
2
107°
77°
3
106°
77°
4
107°
78°
5
106°
79°
6
105°
80°
7
104°
78°
8
103°
75°
9
100°
75°
10
99°
76°
11
99°
75°
12
101°
76°
13
102°
74°
14
101°
74°
15
100°
72°
16
101°
71°
17
102°
70°
18
100°
69°
19
96°
70°
20
101°
73°
21
98°
69°
22
98°
67°
23
97°
68°
24
98°
67°
25
95°
66°
26
96°
65°
27
96°
63°
28
94°
62°
29
92°
63°
30
92°
67°
1
94°
67°
2
97°
68°
3
98°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in El Centro
El Centro's September 2026 forecast shows daily high temperatures ranging from 92° to 109°, with overnight lows between 62° and 81°. The average high for September is 100° with an average low of 72°. 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 El Centro. See also: October | November | December.