S
M
T
W
T
F
S
27
74°
55°
28
76°
51°
29
87°
53°
30
88°
57°
1
83°
58°
2
84°
60°
3
93°
60°
4
94°
66°
5
91°
65°
6
91°
63°
7
90°
62°
8
96°
57°
9
84°
57°
10
73°
52°
11
71°
53°
12
76°
49°
13
76°
50°
14
77°
50°
15
78°
50°
16
81°
54°
17
80°
52°
18
79°
53°
19
82°
53°
20
81°
54°
21
74°
48°
22
77°
51°
23
76°
51°
24
74°
50°
25
74°
51°
26
75°
50°
27
75°
50°
28
74°
49°
29
74°
48°
30
73°
51°
31
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Monte Sereno
Monte Sereno's October 2026 forecast shows daily high temperatures ranging from 71° to 96°, with overnight lows between 48° and 57°. The average high for October is 77° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Monte Sereno. See also: November | December | January.