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°
69°
24
79°
72°
25
93°
74°
26
98°
78°
27
101°
74°
28
98°
73°
29
94°
71°
30
92°
68°
31
91°
66°
1
91°
67°
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 79° to 101°, with overnight lows between 66° and 78°. The average high for July is 92° with an average low of 71°. 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.
