S
M
T
W
T
F
S
31
75°
52°
1
68°
48°
2
78°
45°
3
80°
52°
4
80°
49°
5
80°
53°
6
78°
61°
7
78°
59°
8
75°
52°
9
78°
54°
10
82°
66°
11
85°
66°
12
81°
58°
13
81°
56°
14
66°
53°
15
68°
47°
16
72°
46°
17
72°
56°
18
74°
58°
19
73°
54°
20
71°
53°
21
72°
54°
22
69°
55°
23
73°
55°
24
70°
57°
25
69°
58°
26
71°
57°
27
73°
58°
28
71°
61°
29
77°
62°
30
76°
63°
1
76°
60°
2
74°
59°
3
72°
57°
4
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Oshawa
Oshawa's June 2026 forecast shows daily high temperatures ranging from 69° to 77°, with overnight lows between 53° and 63°. The average high for June is 73° with an average low of 57°. 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 Oshawa. See also: July | August | September.
