S
M
T
W
T
F
S
30
96°
69°
31
92°
64°
1
94°
56°
2
92°
54°
3
89°
57°
4
89°
57°
5
92°
68°
6
89°
69°
7
94°
68°
8
93°
65°
9
91°
64°
10
91°
65°
11
95°
65°
12
96°
66°
13
95°
64°
14
94°
62°
15
97°
66°
16
96°
66°
17
96°
64°
18
92°
59°
19
89°
59°
20
90°
60°
21
92°
62°
22
93°
62°
23
93°
61°
24
89°
57°
25
84°
55°
26
83°
55°
27
82°
54°
28
83°
55°
29
84°
56°
30
84°
56°
1
83°
55°
2
85°
60°
3
89°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake Elsinore
Lake Elsinore's September 2026 forecast shows daily high temperatures ranging from 82° to 97°, with overnight lows between 54° and 69°. The average high for September is 90° with an average low of 61°. 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 Lake Elsinore. See also: October | November | December.
