S
M
T
W
T
F
S
28
82°
57°
29
82°
60°
30
92°
65°
1
91°
74°
2
92°
69°
3
88°
66°
4
80°
60°
5
76°
60°
6
83°
60°
7
85°
61°
8
82°
60°
9
81°
61°
10
80°
61°
11
82°
60°
12
83°
64°
13
82°
61°
14
78°
67°
15
73°
55°
16
74°
56°
17
73°
58°
18
76°
58°
19
76°
62°
20
79°
62°
21
77°
61°
22
78°
61°
23
76°
60°
24
76°
61°
25
77°
61°
26
78°
62°
27
79°
61°
28
81°
62°
29
80°
63°
30
81°
62°
31
80°
62°
1
77°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Alliston
Alliston's July 2026 forecast shows daily high temperatures ranging from 73° to 92°, with overnight lows between 55° and 74°. The average high for July is 80° 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 Alliston. See also: August | September | October.
