S
M
T
W
T
F
S
28
86°
58°
29
87°
57°
30
75°
63°
1
91°
72°
2
93°
71°
3
92°
68°
4
87°
63°
5
83°
62°
6
88°
65°
7
86°
66°
8
87°
65°
9
86°
65°
10
83°
64°
11
83°
64°
12
81°
65°
13
82°
69°
14
73°
54°
15
74°
56°
16
75°
57°
17
76°
61°
18
78°
62°
19
81°
62°
20
82°
63°
21
83°
64°
22
83°
64°
23
82°
63°
24
83°
64°
25
84°
64°
26
85°
65°
27
85°
65°
28
84°
64°
29
83°
62°
30
80°
61°
31
74°
59°
1
74°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Ottawa South
Ottawa South's July 2026 forecast shows daily high temperatures ranging from 73° to 93°, with overnight lows between 54° and 72°. The average high for July is 83° with an average low of 63°. 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 Ottawa South. See also: August | September | October.
