S
M
T
W
T
F
S
26
73°
55°
27
75°
56°
28
75°
55°
29
78°
56°
30
77°
57°
31
75°
56°
1
77°
55°
2
75°
55°
3
71°
54°
4
73°
55°
5
76°
56°
6
77°
55°
7
74°
55°
8
72°
54°
9
70°
55°
10
71°
55°
11
75°
54°
12
75°
55°
13
74°
54°
14
79°
54°
15
80°
46°
16
74°
54°
17
77°
56°
18
75°
54°
19
77°
53°
20
77°
50°
21
69°
45°
22
69°
44°
23
72°
45°
24
75°
50°
25
74°
43°
26
67°
41°
27
67°
44°
28
68°
44°
29
66°
43°
30
66°
43°
31
64°
44°
1
64°
42°
2
65°
41°
3
66°
42°
4
67°
43°
5
64°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Témiscouata-sur-le-Lac
Témiscouata-sur-le-Lac's August 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 41° and 57°. The average high for August is 72° with an average low of 50°. 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 Témiscouata-sur-le-Lac. See also: September | October | November.