S
M
T
W
T
F
S
26
98°
77°
27
99°
77°
28
99°
77°
29
97°
78°
30
98°
77°
31
100°
79°
1
97°
73°
2
95°
68°
3
98°
67°
4
99°
71°
5
99°
77°
6
100°
77°
7
98°
74°
8
94°
74°
9
96°
70°
10
97°
75°
11
97°
75°
12
100°
78°
13
99°
79°
14
99°
79°
15
99°
79°
16
101°
79°
17
104°
76°
18
104°
78°
19
102°
79°
20
104°
79°
21
103°
76°
22
106°
76°
23
103°
78°
24
106°
80°
25
101°
79°
26
102°
75°
27
101°
75°
28
98°
72°
29
96°
71°
30
96°
71°
31
94°
70°
1
93°
71°
2
94°
70°
3
90°
67°
4
93°
72°
5
94°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Winnsboro
Winnsboro's August 2026 forecast shows daily high temperatures ranging from 90° to 106°, with overnight lows between 67° and 80°. The average high for August is 98° with an average low of 73°. 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 Winnsboro. See also: September | October | November.