S
M
T
W
T
F
S
28
73°
53°
29
74°
61°
30
81°
62°
1
80°
60°
2
76°
59°
3
77°
58°
4
75°
57°
5
76°
58°
6
77°
58°
7
82°
62°
8
82°
62°
9
83°
63°
10
81°
62°
11
79°
62°
12
81°
63°
13
80°
63°
14
80°
62°
15
80°
62°
16
81°
61°
17
81°
62°
18
80°
63°
19
82°
62°
20
80°
59°
21
83°
62°
22
80°
54°
23
82°
53°
24
75°
55°
25
77°
54°
26
77°
56°
27
78°
59°
28
76°
55°
29
77°
54°
30
80°
62°
31
84°
62°
1
85°
63°
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 73° to 85°, with overnight lows between 53° and 63°. The average high for July is 79° with an average low of 60°. 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.
