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
88°
68°
9
75°
65°
10
81°
59°
11
82°
59°
12
85°
62°
13
83°
67°
14
86°
67°
15
85°
64°
16
80°
61°
17
81°
62°
18
78°
60°
19
78°
61°
20
77°
59°
21
81°
60°
22
74°
56°
23
75°
55°
24
83°
62°
25
82°
63°
26
84°
64°
27
84°
64°
28
83°
63°
29
81°
64°
30
80°
62°
31
75°
62°
1
77°
62°
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 74° to 88°, with overnight lows between 55° and 68°. The average high for July is 81° 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.
