S
M
T
W
T
F
S
26
97°
75°
27
96°
75°
28
97°
74°
29
98°
76°
30
94°
74°
31
96°
74°
1
82°
67°
2
87°
63°
3
91°
66°
4
96°
69°
5
97°
73°
6
98°
76°
7
94°
73°
8
98°
68°
9
97°
70°
10
98°
74°
11
99°
74°
12
100°
77°
13
N/A
14
100°
75°
15
99°
77°
16
104°
75°
17
95°
73°
18
100°
75°
19
105°
76°
20
100°
74°
21
98°
73°
22
98°
76°
23
97°
72°
24
97°
69°
25
92°
67°
26
89°
65°
27
94°
71°
28
91°
68°
29
91°
67°
30
92°
68°
31
92°
69°
1
91°
69°
2
92°
68°
3
93°
69°
4
92°
69°
5
91°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Siloam Springs
Siloam Springs's August 2026 forecast shows daily high temperatures ranging from 89° to 105°, with overnight lows between 65° and 77°. The average high for August is 95° with an average low of 71°. 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.