S
M
T
W
T
F
S
27
72°
53°
28
72°
52°
29
71°
53°
30
71°
53°
1
70°
51°
2
67°
51°
3
65°
50°
4
67°
49°
5
68°
51°
6
68°
48°
7
67°
47°
8
65°
47°
9
68°
42°
10
66°
38°
11
58°
38°
12
59°
39°
13
64°
36°
14
58°
39°
15
57°
44°
16
63°
41°
17
63°
45°
18
64°
46°
19
66°
39°
20
64°
41°
21
56°
43°
22
56°
36°
23
60°
39°
24
49°
41°
25
54°
38°
26
61°
36°
27
55°
32°
28
46°
28°
29
44°
26°
30
42°
26°
31
42°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lewiston
Lewiston's October 2026 forecast shows daily high temperatures ranging from 42° to 72°, with overnight lows between 26° and 53°. The average high for October is 61° with an average low of 42°. 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 Lewiston. See also: November | December | January.