S
M
T
W
T
F
S
27
68°
45°
28
63°
42°
29
61°
52°
30
66°
48°
1
70°
46°
2
67°
54°
3
73°
52°
4
69°
47°
5
66°
54°
6
68°
53°
7
71°
47°
8
64°
46°
9
61°
49°
10
62°
43°
11
63°
35°
12
63°
33°
13
61°
45°
14
63°
52°
15
71°
47°
16
69°
48°
17
62°
42°
18
62°
37°
19
62°
41°
20
66°
41°
21
67°
44°
22
60°
43°
23
61°
38°
24
55°
40°
25
54°
46°
26
59°
49°
27
55°
46°
28
55°
44°
29
49°
42°
30
52°
40°
31
55°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Montesano
Montesano's October 2026 forecast shows daily high temperatures ranging from 55° to 55°, with overnight lows between 33° and 33°. The average high for October is 55° with an average low of 33°. 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 Montesano. See also: November | December | January.