S
M
T
W
T
F
S
28
81°
58°
29
72°
56°
30
74°
55°
1
75°
58°
2
76°
57°
3
75°
56°
4
76°
62°
5
78°
61°
6
82°
66°
7
85°
64°
8
82°
64°
9
80°
65°
10
85°
65°
11
85°
63°
12
84°
64°
13
81°
63°
14
83°
64°
15
84°
64°
16
79°
58°
17
76°
57°
18
77°
62°
19
79°
57°
20
76°
56°
21
76°
57°
22
81°
63°
23
84°
64°
24
85°
65°
25
83°
61°
26
77°
57°
27
81°
60°
28
83°
60°
29
85°
59°
30
78°
55°
31
80°
54°
1
76°
55°
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 72° to 85°, with overnight lows between 54° and 66°. The average high for July is 80° with an average low of 60°. 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.