S
M
T
W
T
F
S
28
64°
45°
29
72°
52°
30
80°
57°
1
83°
55°
2
87°
59°
3
88°
62°
4
94°
65°
5
98°
67°
6
99°
69°
7
95°
69°
8
96°
65°
9
92°
63°
10
91°
64°
11
95°
65°
12
94°
66°
13
100°
70°
14
93°
62°
15
95°
67°
16
90°
67°
17
92°
66°
18
93°
67°
19
97°
68°
20
98°
69°
21
97°
68°
22
97°
68°
23
96°
67°
24
94°
68°
25
89°
66°
26
94°
68°
27
93°
68°
28
95°
67°
29
96°
67°
30
97°
68°
31
97°
68°
1
99°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Boise
Boise's July 2026 forecast shows daily high temperatures ranging from 83° to 100°, with overnight lows between 55° and 70°. The average high for July is 94° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Boise. See also: August | September | October.