S
M
T
W
T
F
S
27
72°
47°
28
71°
44°
29
72°
48°
30
77°
54°
1
76°
50°
2
69°
46°
3
65°
47°
4
75°
53°
5
75°
53°
6
76°
51°
7
70°
45°
8
65°
42°
9
62°
51°
10
65°
48°
11
71°
43°
12
59°
38°
13
58°
37°
14
58°
45°
15
59°
40°
16
58°
43°
17
57°
40°
18
56°
39°
19
56°
36°
20
57°
35°
21
60°
38°
22
56°
40°
23
62°
43°
24
61°
38°
25
60°
42°
26
64°
41°
27
64°
43°
28
57°
34°
29
50°
31°
30
49°
30°
31
49°
30°
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 49° to 77°, with overnight lows between 30° and 54°. The average high for October is 63° 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 Boise. See also: November | December | January.
