S
M
T
W
T
F
S
26
73°
52°
27
74°
55°
28
74°
59°
29
75°
60°
30
80°
61°
31
81°
62°
1
82°
61°
2
82°
62°
3
83°
61°
4
83°
54°
5
77°
54°
6
73°
53°
7
73°
52°
8
74°
53°
9
75°
53°
10
76°
55°
11
78°
59°
12
79°
60°
13
80°
61°
14
79°
60°
15
80°
58°
16
81°
53°
17
74°
55°
18
73°
51°
19
75°
52°
20
79°
57°
21
79°
56°
22
72°
57°
23
75°
55°
24
77°
58°
25
79°
53°
26
72°
54°
27
74°
54°
28
76°
58°
29
75°
58°
30
78°
59°
31
78°
57°
1
77°
56°
2
75°
55°
3
77°
52°
4
71°
53°
5
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Barrie
Barrie's August 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 51° and 62°. The average high for August is 77° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Barrie. See also: September | October | November.
