S
M
T
W
T
F
S
26
84°
61°
27
84°
66°
28
72°
63°
29
79°
64°
30
79°
63°
31
82°
61°
1
81°
61°
2
79°
66°
3
73°
64°
4
83°
60°
5
85°
57°
6
85°
63°
7
83°
69°
8
83°
67°
9
80°
67°
10
80°
65°
11
80°
62°
12
78°
61°
13
78°
58°
14
76°
54°
15
75°
54°
16
76°
62°
17
77°
59°
18
80°
61°
19
73°
57°
20
73°
54°
21
73°
55°
22
74°
57°
23
77°
61°
24
80°
60°
25
79°
59°
26
78°
59°
27
76°
58°
28
72°
53°
29
69°
59°
30
74°
59°
31
67°
50°
1
67°
51°
2
68°
50°
3
72°
58°
4
67°
57°
5
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Saint-Lazare
Saint-Lazare's August 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 50° and 62°. The average high for August is 73° with an average low of 57°. 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 Saint-Lazare. See also: September | October | November.