S
M
T
W
T
F
S
28
80°
61°
29
82°
63°
30
84°
62°
1
84°
63°
2
85°
64°
3
78°
63°
4
79°
62°
5
77°
61°
6
78°
63°
7
79°
64°
8
81°
64°
9
81°
63°
10
84°
64°
11
85°
64°
12
83°
63°
13
86°
65°
14
86°
65°
15
85°
66°
16
83°
63°
17
84°
60°
18
85°
59°
19
84°
61°
20
85°
63°
21
86°
59°
22
83°
60°
23
81°
57°
24
79°
58°
25
80°
59°
26
81°
58°
27
80°
62°
28
80°
59°
29
81°
59°
30
81°
60°
31
84°
64°
1
87°
64°
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 77° to 87°, with overnight lows between 57° and 66°. The average high for July is 82° with an average low of 62°. 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.
