S
M
T
W
T
F
S
28
86°
59°
29
88°
59°
30
86°
61°
1
90°
55°
2
88°
63°
3
88°
61°
4
90°
59°
5
97°
59°
6
95°
63°
7
91°
65°
8
90°
62°
9
84°
59°
10
87°
62°
11
95°
65°
12
95°
66°
13
98°
68°
14
99°
66°
15
90°
64°
16
84°
63°
17
88°
65°
18
91°
66°
19
87°
65°
20
88°
58°
21
90°
62°
22
90°
61°
23
84°
60°
24
86°
59°
25
90°
61°
26
90°
61°
27
89°
60°
28
91°
62°
29
91°
61°
30
90°
61°
31
91°
62°
1
90°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Boulder
Boulder's July 2026 forecast shows daily high temperatures ranging from 84° to 99°, with overnight lows between 58° and 68°. The average high for July is 90° with an average low of 63°. 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 Boulder. See also: August | September | October.
