S
M
T
W
T
F
S
27
68°
42°
28
67°
40°
29
68°
42°
30
68°
49°
1
70°
45°
2
74°
47°
3
70°
42°
4
65°
38°
5
62°
41°
6
64°
46°
7
68°
49°
8
75°
39°
9
62°
37°
10
62°
37°
11
63°
38°
12
70°
48°
13
69°
39°
14
62°
37°
15
60°
37°
16
61°
38°
17
61°
37°
18
62°
38°
19
61°
38°
20
64°
39°
21
63°
35°
22
56°
33°
23
55°
37°
24
54°
33°
25
54°
34°
26
55°
40°
27
57°
33°
28
54°
32°
29
52°
33°
30
51°
33°
31
53°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Boise
Boise's October 2026 forecast shows daily high temperatures ranging from 51° to 75°, with overnight lows between 32° and 49°. The average high for October is 62° with an average low of 39°. 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 Boise. See also: November | December | January.
