S
M
T
W
T
F
S
31
74°
57°
1
74°
54°
2
68°
57°
3
74°
58°
4
76°
60°
5
76°
60°
6
75°
59°
7
76°
59°
8
68°
58°
9
69°
60°
10
77°
62°
11
77°
62°
12
76°
58°
13
70°
54°
14
70°
60°
15
71°
58°
16
70°
57°
17
73°
62°
18
77°
61°
19
72°
56°
20
74°
58°
21
77°
58°
22
78°
62°
23
79°
54°
24
74°
55°
25
73°
58°
26
74°
60°
27
77°
64°
28
76°
57°
29
82°
65°
30
83°
57°
1
77°
56°
2
76°
59°
3
77°
64°
4
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Sarnia
Sarnia's June 2026 forecast shows daily high temperatures ranging from 68° to 83°, with overnight lows between 54° and 65°. The average high for June is 75° 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 Sarnia. See also: July | August | September.
