S
M
T
W
T
F
S
28
103°
57°
29
103°
65°
30
96°
67°
1
97°
65°
2
97°
63°
3
99°
67°
4
93°
64°
5
96°
64°
6
98°
59°
7
101°
62°
8
102°
64°
9
99°
59°
10
93°
61°
11
90°
63°
12
92°
61°
13
92°
60°
14
89°
61°
15
90°
61°
16
91°
61°
17
92°
63°
18
94°
65°
19
99°
66°
20
102°
65°
21
98°
66°
22
94°
64°
23
94°
64°
24
91°
65°
25
91°
65°
26
92°
64°
27
93°
63°
28
92°
67°
29
93°
68°
30
96°
66°
31
95°
67°
1
95°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Boise City
Boise City's July 2026 forecast shows daily high temperatures ranging from 89° to 102°, with overnight lows between 61° and 68°. The average high for July is 94° with an average low of 65°. 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 City. See also: August | September | October.