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°
54°
9
85°
66°
10
75°
65°
11
80°
66°
12
83°
62°
13
80°
62°
14
76°
59°
15
71°
58°
16
73°
57°
17
76°
57°
18
74°
59°
19
78°
58°
20
75°
57°
21
74°
61°
22
75°
58°
23
72°
58°
24
72°
57°
25
77°
57°
26
72°
58°
27
73°
60°
28
75°
54°
29
73°
53°
30
73°
59°
1
79°
58°
2
73°
55°
3
74°
59°
4
74°
58°
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 71° to 85°, with overnight lows between 53° and 66°. The average high for June is 76° with an average low of 59°. 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.
