S
M
T
W
T
F
S
26
78°
63°
27
77°
62°
28
77°
63°
29
81°
63°
30
77°
62°
31
80°
63°
1
80°
62°
2
81°
63°
3
79°
63°
4
82°
62°
5
75°
60°
6
79°
62°
7
79°
60°
8
76°
56°
9
74°
55°
10
74°
56°
11
75°
61°
12
75°
58°
13
78°
62°
14
79°
63°
15
81°
61°
16
74°
58°
17
75°
54°
18
75°
53°
19
76°
59°
20
78°
60°
21
76°
56°
22
78°
53°
23
77°
52°
24
74°
51°
25
73°
53°
26
76°
52°
27
75°
53°
28
76°
54°
29
78°
58°
30
79°
58°
31
79°
59°
1
78°
59°
2
79°
56°
3
78°
50°
4
70°
48°
5
69°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Saint Lawrence
Saint Lawrence's August 2026 forecast shows daily high temperatures ranging from 69° to 82°, with overnight lows between 48° and 63°. The average high for August is 77° with an average low of 58°. 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 Lawrence. See also: September | October | November.