S
M
T
W
T
F
S
28
83°
63°
29
89°
65°
30
94°
77°
1
98°
78°
2
97°
77°
3
96°
71°
4
87°
70°
5
77°
71°
6
83°
66°
7
85°
66°
8
87°
70°
9
87°
70°
10
81°
63°
11
82°
64°
12
80°
62°
13
82°
64°
14
81°
63°
15
81°
63°
16
82°
65°
17
80°
64°
18
82°
66°
19
84°
68°
20
80°
61°
21
79°
61°
22
80°
62°
23
81°
65°
24
82°
67°
25
84°
67°
26
83°
66°
27
82°
67°
28
87°
68°
29
87°
68°
30
84°
67°
31
84°
68°
1
85°
68°
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 87°, with overnight lows between 61° and 71°. The average high for July is 83° with an average low of 66°. 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.
