S
M
T
W
T
F
S
26
82°
61°
27
78°
60°
28
84°
62°
29
83°
62°
30
84°
61°
31
84°
62°
1
85°
62°
2
83°
63°
3
85°
61°
4
82°
60°
5
80°
61°
6
83°
61°
7
84°
58°
8
76°
53°
9
76°
53°
10
77°
57°
11
76°
61°
12
81°
61°
13
83°
62°
14
84°
61°
15
83°
59°
16
76°
55°
17
76°
52°
18
77°
59°
19
80°
59°
20
82°
58°
21
83°
59°
22
82°
57°
23
77°
51°
24
74°
50°
25
75°
50°
26
75°
51°
27
76°
50°
28
77°
50°
29
78°
52°
30
80°
52°
31
81°
57°
1
80°
57°
2
80°
50°
3
79°
46°
4
72°
47°
5
71°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Riverdale
Riverdale's August 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 46° and 63°. The average high for August is 80° 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 Riverdale. See also: September | October | November.