S
M
T
W
T
F
S
28
86°
58°
29
87°
57°
30
76°
59°
1
90°
67°
2
92°
69°
3
86°
68°
4
80°
57°
5
82°
56°
6
84°
59°
7
85°
60°
8
89°
63°
9
71°
64°
10
81°
62°
11
82°
56°
12
83°
61°
13
87°
67°
14
99°
71°
15
85°
61°
16
83°
62°
17
80°
59°
18
80°
60°
19
78°
59°
20
78°
62°
21
83°
63°
22
85°
65°
23
83°
65°
24
80°
61°
25
82°
63°
26
84°
64°
27
77°
57°
28
77°
60°
29
75°
58°
30
75°
60°
31
79°
61°
1
78°
61°
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 75° to 99°, with overnight lows between 56° and 71°. The average high for July is 82° 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 Ottawa South. See also: August | September | October.
