S
M
T
W
T
F
S
28
70°
52°
29
66°
50°
30
66°
55°
1
66°
54°
2
64°
52°
3
63°
52°
4
64°
57°
5
63°
57°
6
63°
59°
7
N/A
8
75°
54°
9
75°
56°
10
82°
59°
11
75°
56°
12
76°
49°
13
75°
51°
14
74°
52°
15
72°
54°
16
73°
54°
17
71°
52°
18
70°
53°
19
69°
52°
20
66°
53°
21
64°
51°
22
66°
53°
23
67°
52°
24
67°
53°
25
69°
53°
26
69°
52°
27
68°
53°
28
65°
50°
29
65°
53°
30
68°
53°
31
69°
52°
1
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Thornhill
Thornhill's July 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 49° and 59°. The average high for July is 70° with an average low of 53°. 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 Thornhill. See also: August | September | October.
