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