S
M
T
W
T
F
S
26
94°
72°
27
95°
72°
28
95°
73°
29
94°
73°
30
95°
72°
31
95°
73°
1
94°
72°
2
95°
73°
3
95°
74°
4
96°
73°
5
96°
74°
6
95°
74°
7
96°
73°
8
96°
73°
9
95°
72°
10
95°
73°
11
94°
74°
12
96°
74°
13
96°
73°
14
95°
73°
15
96°
72°
16
95°
72°
17
90°
67°
18
90°
67°
19
91°
66°
20
89°
67°
21
87°
66°
22
86°
64°
23
87°
62°
24
86°
61°
25
86°
62°
26
87°
61°
27
86°
61°
28
85°
60°
29
88°
60°
30
89°
61°
31
91°
65°
1
91°
66°
2
90°
65°
3
91°
66°
4
91°
66°
5
90°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Siloam Springs
Siloam Springs's August 2026 forecast shows daily high temperatures ranging from 85° to 96°, with overnight lows between 60° and 74°. The average high for August is 92° with an average low of 69°. 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 Siloam Springs. See also: September | October | November.