S
M
T
W
T
F
S
27
67°
51°
28
75°
49°
29
76°
51°
30
80°
51°
1
80°
53°
2
83°
52°
3
86°
56°
4
84°
58°
5
85°
56°
6
83°
56°
7
84°
54°
8
81°
55°
9
78°
52°
10
77°
53°
11
77°
52°
12
67°
43°
13
74°
49°
14
74°
50°
15
73°
49°
16
72°
49°
17
70°
48°
18
65°
47°
19
64°
45°
20
68°
46°
21
68°
46°
22
67°
45°
23
68°
46°
24
67°
44°
25
66°
45°
26
66°
44°
27
65°
43°
28
64°
44°
29
62°
39°
30
51°
32°
31
50°
34°
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 50° to 86°, with overnight lows between 32° and 58°. The average high for October is 72° with an average low of 48°. 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.
