S
M
T
W
T
F
S
26
82°
62°
27
83°
61°
28
84°
63°
29
84°
63°
30
82°
62°
31
83°
63°
1
84°
64°
2
82°
61°
3
76°
57°
4
75°
56°
5
75°
55°
6
76°
55°
7
75°
53°
8
76°
52°
9
76°
54°
10
79°
61°
11
81°
59°
12
80°
62°
13
81°
63°
14
83°
60°
15
78°
60°
16
80°
61°
17
81°
60°
18
79°
59°
19
73°
53°
20
73°
54°
21
74°
56°
22
79°
60°
23
79°
59°
24
72°
51°
25
72°
56°
26
73°
56°
27
72°
49°
28
71°
51°
29
74°
53°
30
77°
52°
31
75°
53°
1
73°
54°
2
75°
55°
3
76°
55°
4
76°
56°
5
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Saarlouis
Saarlouis's August 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 49° and 64°. The average high for August is 77° 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 Saarlouis. See also: September | October | November.