S
M
T
W
T
F
S
26
81°
60°
27
82°
61°
28
83°
61°
29
81°
59°
30
75°
59°
31
80°
60°
1
79°
61°
2
83°
61°
3
83°
60°
4
81°
60°
5
82°
59°
6
81°
58°
7
82°
54°
8
81°
49°
9
72°
50°
10
73°
51°
11
72°
48°
12
72°
51°
13
73°
55°
14
75°
53°
15
77°
55°
16
80°
56°
17
79°
57°
18
81°
51°
19
80°
57°
20
79°
58°
21
81°
55°
22
79°
53°
23
79°
54°
24
78°
52°
25
74°
49°
26
69°
48°
27
69°
49°
28
68°
46°
29
68°
46°
30
67°
48°
31
66°
49°
1
68°
48°
2
72°
49°
3
75°
51°
4
75°
50°
5
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ste. Agathe
Ste. Agathe's August 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 46° and 61°. The average high for August is 76° with an average low of 54°. 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 Ste. Agathe. See also: September | October | November.