S
M
T
W
T
F
S
31
66°
50°
1
69°
53°
2
73°
56°
3
74°
55°
4
74°
50°
5
64°
49°
6
65°
51°
7
69°
55°
8
66°
57°
9
74°
55°
10
68°
55°
11
67°
52°
12
68°
58°
13
75°
53°
14
69°
50°
15
68°
50°
16
72°
53°
17
74°
53°
18
75°
56°
19
78°
49°
20
71°
51°
21
69°
52°
22
71°
56°
23
72°
53°
24
71°
52°
25
71°
52°
26
72°
53°
27
71°
53°
28
70°
52°
29
71°
54°
30
74°
60°
1
73°
57°
2
72°
56°
3
74°
53°
4
77°
58°
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 64° to 78°, with overnight lows between 49° and 60°. The average high for June is 71° with an average low of 53°. 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.
