S
M
T
W
T
F
S
26
77°
62°
27
79°
59°
28
82°
59°
29
82°
57°
30
77°
55°
31
80°
57°
1
80°
55°
2
78°
54°
3
77°
55°
4
77°
53°
5
78°
54°
6
79°
55°
7
79°
55°
8
81°
60°
9
82°
55°
10
78°
58°
11
82°
62°
12
83°
62°
13
82°
59°
14
83°
54°
15
78°
53°
16
76°
58°
17
76°
59°
18
75°
53°
19
75°
51°
20
74°
60°
21
75°
61°
22
82°
59°
23
83°
60°
24
81°
54°
25
80°
51°
26
78°
52°
27
73°
55°
28
73°
56°
29
75°
58°
30
79°
59°
31
80°
57°
1
80°
52°
2
78°
51°
3
79°
50°
4
72°
54°
5
78°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Norwalk
Norwalk's August 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 50° and 62°. The average high for August is 78° with an average low of 56°. 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 Norwalk. See also: September | October | November.