S
M
T
W
T
F
S
28
80°
66°
29
88°
74°
30
90°
73°
1
90°
74°
2
90°
70°
3
88°
67°
4
84°
66°
5
78°
65°
6
80°
62°
7
83°
64°
8
85°
67°
9
83°
68°
10
82°
64°
11
82°
61°
12
88°
65°
13
87°
66°
14
88°
71°
15
95°
73°
16
92°
70°
17
88°
72°
18
89°
64°
19
87°
66°
20
86°
69°
21
84°
63°
22
79°
61°
23
78°
62°
24
80°
62°
25
82°
64°
26
81°
62°
27
83°
65°
28
80°
64°
29
83°
62°
30
77°
62°
31
80°
66°
1
78°
65°
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 77° to 92°, with overnight lows between 61° and 72°. The average high for July is 83° with an average low of 65°. 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.
