S
M
T
W
T
F
S
26
75°
58°
27
78°
58°
28
78°
57°
29
74°
59°
30
76°
58°
31
71°
56°
1
69°
55°
2
70°
55°
3
68°
54°
4
68°
55°
5
70°
55°
6
69°
56°
7
70°
55°
8
71°
56°
9
71°
57°
10
70°
57°
11
70°
56°
12
72°
55°
13
74°
56°
14
76°
57°
15
70°
56°
16
68°
56°
17
68°
55°
18
71°
54°
19
72°
53°
20
71°
54°
21
68°
52°
22
69°
49°
23
69°
45°
24
66°
49°
25
67°
50°
26
69°
45°
27
66°
42°
28
66°
47°
29
67°
48°
30
66°
44°
31
66°
44°
1
67°
51°
2
72°
51°
3
64°
50°
4
64°
50°
5
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Vallée-Jonction
Vallée-Jonction's August 2026 forecast shows daily high temperatures ranging from 64° to 78°, with overnight lows between 42° and 59°. The average high for August is 70° 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 August weather will actually feel in Vallée-Jonction. See also: September | October | November.