S
M
T
W
T
F
S
26
78°
55°
27
80°
56°
28
80°
55°
29
79°
56°
30
78°
54°
31
72°
54°
1
73°
53°
2
74°
54°
3
76°
54°
4
77°
53°
5
78°
55°
6
79°
55°
7
79°
56°
8
81°
55°
9
79°
54°
10
80°
55°
11
81°
56°
12
81°
55°
13
79°
56°
14
72°
47°
15
74°
51°
16
70°
45°
17
78°
47°
18
75°
45°
19
74°
41°
20
69°
43°
21
71°
48°
22
70°
46°
23
70°
43°
24
74°
51°
25
73°
51°
26
75°
49°
27
77°
42°
28
75°
41°
29
68°
42°
30
68°
42°
31
67°
43°
1
67°
44°
2
68°
44°
3
71°
39°
4
70°
43°
5
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Riley
Riley's August 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 39° and 56°. The average high for August is 74° with an average low of 49°. 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 Riley. See also: September | October | November.
