S
M
T
W
T
F
S
31
70°
48°
1
72°
44°
2
78°
45°
3
84°
49°
4
86°
50°
5
85°
55°
6
75°
62°
7
70°
53°
8
79°
47°
9
86°
52°
10
76°
66°
11
86°
67°
12
87°
62°
13
83°
57°
14
66°
55°
15
65°
50°
16
77°
48°
17
74°
52°
18
73°
59°
19
68°
59°
20
73°
59°
21
75°
54°
22
74°
52°
23
77°
50°
24
79°
53°
25
79°
61°
26
74°
58°
27
79°
59°
28
83°
60°
29
84°
64°
30
82°
65°
1
80°
67°
2
87°
69°
3
86°
65°
4
85°
65°
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 74° to 87°, with overnight lows between 58° and 69°. The average high for June is 82° with an average low of 63°. 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.
