S
M
T
W
T
F
S
28
77°
59°
29
74°
57°
30
73°
54°
1
74°
55°
2
74°
59°
3
75°
55°
4
75°
56°
5
76°
57°
6
77°
62°
7
82°
64°
8
83°
63°
9
83°
63°
10
79°
62°
11
82°
63°
12
83°
58°
13
76°
57°
14
77°
62°
15
81°
63°
16
81°
56°
17
76°
55°
18
75°
56°
19
76°
62°
20
76°
61°
21
77°
59°
22
77°
60°
23
78°
58°
24
77°
62°
25
80°
63°
26
83°
64°
27
83°
56°
28
77°
58°
29
77°
62°
30
78°
60°
31
77°
55°
1
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Dundas
Dundas's July 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 54° and 64°. The average high for July is 78° with an average low of 59°. 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 Dundas. See also: August | September | October.