S
M
T
W
T
F
S
30
91°
73°
31
87°
69°
1
86°
65°
2
84°
62°
3
82°
63°
4
84°
64°
5
90°
62°
6
75°
65°
7
93°
72°
8
95°
73°
9
107°
77°
10
97°
76°
11
90°
74°
12
89°
70°
13
87°
67°
14
88°
66°
15
86°
66°
16
84°
64°
17
86°
63°
18
87°
66°
19
88°
67°
20
88°
68°
21
87°
66°
22
85°
65°
23
85°
66°
24
86°
64°
25
85°
65°
26
87°
63°
27
87°
64°
28
83°
60°
29
84°
63°
30
81°
62°
1
80°
61°
2
79°
62°
3
79°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in El Monte
El Monte's September 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 60° and 68°. The average high for September is 85° with an average low of 64°. 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 Monte. See also: October | November | December.
