S
M
T
W
T
F
S
31
85°
65°
1
89°
68°
2
84°
66°
3
84°
63°
4
83°
70°
5
88°
70°
6
85°
68°
7
79°
67°
8
86°
70°
9
88°
68°
10
90°
71°
11
91°
70°
12
89°
69°
13
86°
66°
14
88°
64°
15
85°
62°
16
80°
60°
17
85°
64°
18
89°
67°
19
86°
69°
20
86°
68°
21
81°
62°
22
81°
68°
23
89°
70°
24
90°
71°
25
91°
70°
26
88°
70°
27
83°
69°
28
83°
70°
29
84°
70°
30
85°
69°
1
86°
69°
2
85°
70°
3
85°
70°
4
84°
69°
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 79° to 91°, with overnight lows between 60° and 71°. The average high for June is 86° with an average low of 68°. 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.
