S
M
T
W
T
F
S
26
81°
53°
27
82°
59°
28
81°
63°
29
78°
66°
30
80°
63°
31
84°
66°
1
84°
69°
2
82°
71°
3
80°
67°
4
84°
65°
5
86°
67°
6
87°
68°
7
86°
65°
8
86°
67°
9
87°
66°
10
86°
65°
11
86°
66°
12
85°
63°
13
81°
67°
14
86°
64°
15
81°
61°
16
79°
60°
17
79°
65°
18
80°
63°
19
79°
61°
20
78°
60°
21
79°
66°
22
80°
65°
23
78°
61°
24
78°
59°
25
77°
60°
26
78°
59°
27
77°
58°
28
77°
58°
29
76°
57°
30
77°
60°
31
80°
65°
1
82°
65°
2
80°
64°
3
77°
62°
4
76°
59°
5
75°
58°
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 75° to 87°, with overnight lows between 57° and 71°. The average high for August is 81° with an average low of 63°. 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.