S
M
T
W
T
F
S
28
82°
54°
29
82°
54°
30
92°
64°
1
94°
70°
2
89°
69°
3
87°
68°
4
79°
65°
5
79°
64°
6
82°
59°
7
82°
64°
8
87°
62°
9
75°
62°
10
81°
60°
11
80°
58°
12
82°
54°
13
90°
57°
14
94°
71°
15
79°
62°
16
79°
59°
17
82°
65°
18
78°
59°
19
72°
51°
20
80°
62°
21
77°
55°
22
71°
54°
23
75°
55°
24
77°
56°
25
76°
57°
26
76°
58°
27
77°
59°
28
78°
57°
29
77°
53°
30
74°
58°
31
74°
61°
1
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Thornton
Thornton's July 2026 forecast shows daily high temperatures ranging from 71° to 82°, with overnight lows between 51° and 65°. The average high for July is 76° with an average low of 58°. 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 Thornton. See also: August | September | October.
