S
M
T
W
T
F
S
28
93°
75°
29
93°
79°
30
94°
78°
1
93°
73°
2
93°
72°
3
93°
73°
4
73°
66°
5
88°
63°
6
89°
64°
7
90°
63°
8
92°
64°
9
88°
69°
10
87°
68°
11
88°
65°
12
87°
64°
13
88°
62°
14
89°
63°
15
89°
65°
16
90°
67°
17
91°
69°
18
93°
73°
19
95°
72°
20
98°
72°
21
91°
69°
22
81°
64°
23
79°
65°
24
81°
68°
25
97°
72°
26
98°
75°
27
98°
77°
28
89°
74°
29
85°
74°
30
79°
74°
31
90°
65°
1
83°
64°
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 83° to 90°, with overnight lows between 64° and 65°. The average high for July is 87° 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.
