S
M
T
W
T
F
S
30
70°
49°
31
71°
52°
1
72°
52°
2
75°
53°
3
78°
48°
4
77°
52°
5
75°
46°
6
69°
49°
7
76°
51°
8
69°
45°
9
68°
50°
10
71°
52°
11
66°
45°
12
67°
50°
13
67°
50°
14
66°
46°
15
66°
43°
16
66°
44°
17
Hist. Avg.
70°
45°
18
Hist. Avg.
70°
45°
19
Hist. Avg.
70°
45°
20
Hist. Avg.
70°
45°
21
Hist. Avg.
69°
45°
22
Hist. Avg.
69°
44°
23
Hist. Avg.
69°
44°
24
Hist. Avg.
68°
44°
25
Hist. Avg.
68°
44°
26
Hist. Avg.
68°
44°
27
Hist. Avg.
67°
43°
28
Hist. Avg.
67°
43°
29
Hist. Avg.
67°
43°
30
Hist. Avg.
66°
43°
1
Hist. Avg.
66°
42°
2
Hist. Avg.
66°
42°
3
Hist. Avg.
65°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Menlo
Menlo's September 2026 forecast shows daily high temperatures ranging from 66° to 78°, with overnight lows between 43° and 53°. The average high for September is 71° with an average low of 49°. 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 Menlo. See also: October | November | December.
