S
M
T
W
T
F
S
28
71°
62°
29
69°
46°
30
70°
47°
1
70°
50°
2
72°
52°
3
72°
49°
4
71°
48°
5
71°
50°
6
73°
56°
7
79°
57°
8
80°
57°
9
80°
56°
10
76°
55°
11
78°
56°
12
79°
51°
13
72°
50°
14
73°
56°
15
78°
56°
16
78°
49°
17
72°
49°
18
71°
48°
19
72°
54°
20
73°
54°
21
73°
51°
22
74°
53°
23
73°
50°
24
75°
56°
25
79°
57°
26
80°
58°
27
80°
50°
28
74°
52°
29
74°
54°
30
75°
52°
31
75°
48°
1
74°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Harriston
Harriston's July 2026 forecast shows daily high temperatures ranging from 69° to 80°, with overnight lows between 46° and 62°. The average high for July is 74° 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 Harriston. See also: August | September | October.
