S
M
T
W
T
F
S
28
82°
63°
29
78°
60°
30
78°
59°
1
79°
61°
2
79°
67°
3
80°
65°
4
79°
64°
5
80°
67°
6
82°
68°
7
86°
69°
8
87°
69°
9
88°
68°
10
87°
69°
11
86°
69°
12
87°
67°
13
84°
66°
14
83°
67°
15
86°
67°
16
84°
65°
17
80°
61°
18
79°
62°
19
80°
66°
20
80°
62°
21
79°
62°
22
80°
63°
23
80°
64°
24
83°
65°
25
85°
67°
26
85°
66°
27
81°
60°
28
79°
62°
29
82°
66°
30
81°
62°
31
81°
59°
1
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Ottawa
Ottawa's July 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 59° and 69°. The average high for July is 82° with an average low of 64°. 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. See also: August | September | October.
