S
M
T
W
T
F
S
31
75°
44°
1
76°
54°
2
74°
49°
3
79°
47°
4
84°
53°
5
88°
68°
6
82°
64°
7
86°
62°
8
88°
70°
9
83°
68°
10
85°
68°
11
88°
69°
12
90°
68°
13
89°
69°
14
86°
62°
15
81°
60°
16
78°
57°
17
76°
59°
18
81°
61°
19
82°
63°
20
82°
63°
21
82°
59°
22
76°
58°
23
77°
62°
24
83°
68°
25
85°
66°
26
85°
63°
27
78°
61°
28
78°
64°
29
80°
66°
30
81°
65°
1
80°
65°
2
81°
64°
3
84°
66°
4
86°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Ottawa
Ottawa's June 2026 forecast shows daily high temperatures ranging from 76° to 90°, with overnight lows between 57° and 70°. The average high for June is 83° 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 June weather will actually feel in Ottawa. See also: July | August | September.
