S
M
T
W
T
F
S
30
77°
56°
31
76°
54°
1
77°
55°
2
75°
53°
3
74°
51°
4
75°
52°
5
75°
57°
6
76°
55°
7
74°
56°
8
76°
54°
9
74°
51°
10
75°
58°
11
79°
58°
12
79°
59°
13
80°
54°
14
77°
57°
15
77°
55°
16
76°
56°
17
71°
58°
18
78°
56°
19
76°
55°
20
76°
48°
21
78°
46°
22
71°
45°
23
71°
53°
24
74°
55°
25
Hist. Avg.
72°
48°
26
Hist. Avg.
71°
48°
27
Hist. Avg.
71°
48°
28
Hist. Avg.
70°
47°
29
Hist. Avg.
70°
47°
30
Hist. Avg.
69°
46°
1
Hist. Avg.
69°
46°
2
Hist. Avg.
68°
46°
3
Hist. Avg.
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mentone
Mentone's September 2026 forecast shows daily high temperatures ranging from 71° to 80°, with overnight lows between 45° and 59°. The average high for September is 76° with an average low of 54°. 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 Mentone. See also: October | November | December.
