S
M
T
W
T
F
S
28
85°
53°
29
87°
56°
30
90°
58°
1
93°
61°
2
94°
61°
3
95°
62°
4
96°
57°
5
94°
60°
6
93°
61°
7
95°
60°
8
93°
58°
9
86°
58°
10
88°
57°
11
88°
57°
12
87°
60°
13
89°
61°
14
90°
55°
15
85°
56°
16
87°
57°
17
88°
55°
18
86°
55°
19
84°
56°
20
87°
55°
21
86°
59°
22
90°
62°
23
90°
60°
24
91°
60°
25
90°
56°
26
87°
58°
27
87°
61°
28
89°
58°
29
87°
60°
30
91°
62°
31
92°
60°
1
88°
57°
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 84° to 96°, with overnight lows between 53° and 62°. The average high for July is 89° 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.
