S
M
T
W
T
F
S
28
64°
45°
29
72°
52°
30
80°
57°
1
84°
58°
2
86°
52°
3
90°
58°
4
97°
62°
5
98°
61°
6
93°
70°
7
97°
61°
8
97°
66°
9
94°
62°
10
101°
70°
11
101°
68°
12
96°
71°
13
100°
72°
14
95°
70°
15
98°
69°
16
100°
68°
17
101°
68°
18
103°
71°
19
100°
68°
20
96°
67°
21
99°
69°
22
100°
67°
23
106°
72°
24
94°
68°
25
98°
69°
26
98°
69°
27
99°
68°
28
99°
71°
29
100°
70°
30
99°
70°
31
98°
69°
1
90°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Boise Junction
Boise Junction's July 2026 forecast shows daily high temperatures ranging from 90° to 106°, with overnight lows between 64° and 72°. The average high for July is 99° with an average low of 69°. 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 Junction. See also: August | September | October.