S
M
T
W
T
F
S
31
78°
55°
1
79°
56°
2
81°
55°
3
80°
58°
4
78°
61°
5
79°
61°
6
76°
62°
7
82°
54°
8
79°
54°
9
74°
60°
10
75°
63°
11
83°
60°
12
83°
60°
13
76°
62°
14
78°
64°
15
78°
64°
16
76°
63°
17
82°
56°
18
77°
57°
19
76°
62°
20
79°
65°
21
85°
60°
22
81°
57°
23
75°
56°
24
76°
59°
25
77°
58°
26
77°
58°
27
78°
63°
28
79°
62°
29
79°
59°
30
80°
62°
1
82°
61°
2
83°
58°
3
78°
58°
4
78°
60°
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 85°, with overnight lows between 54° and 65°. The average high for June is 79° with an average low of 60°. 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.
