S
M
T
W
T
F
S
26
94°
72°
27
94°
72°
28
95°
73°
29
95°
73°
30
94°
72°
31
96°
73°
1
95°
74°
2
96°
74°
3
97°
73°
4
96°
73°
5
96°
72°
6
95°
74°
7
96°
73°
8
95°
73°
9
94°
72°
10
90°
71°
11
94°
71°
12
94°
69°
13
93°
70°
14
94°
71°
15
93°
70°
16
94°
70°
17
94°
65°
18
93°
63°
19
87°
61°
20
85°
61°
21
85°
62°
22
86°
62°
23
86°
63°
24
87°
62°
25
87°
62°
26
89°
63°
27
88°
64°
28
88°
62°
29
87°
65°
30
91°
64°
31
91°
63°
1
90°
64°
2
89°
65°
3
89°
65°
4
85°
66°
5
87°
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 97°, with overnight lows between 61° and 74°. The average high for August is 92° with an average low of 68°. 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.