S
M
T
W
T
F
S
26
98°
78°
27
99°
78°
28
98°
77°
29
99°
78°
30
100°
79°
31
101°
79°
1
100°
78°
2
99°
78°
3
99°
77°
4
98°
78°
5
99°
78°
6
99°
77°
7
100°
78°
8
100°
78°
9
99°
77°
10
99°
78°
11
98°
77°
12
99°
77°
13
97°
75°
14
97°
74°
15
95°
74°
16
98°
74°
17
99°
75°
18
97°
73°
19
98°
72°
20
98°
71°
21
97°
71°
22
92°
69°
23
93°
70°
24
95°
70°
25
98°
71°
26
98°
69°
27
97°
71°
28
98°
74°
29
98°
73°
30
97°
74°
31
97°
73°
1
96°
72°
2
95°
70°
3
96°
70°
4
97°
73°
5
97°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Corsicana
Corsicana's August 2026 forecast shows daily high temperatures ranging from 92° to 101°, with overnight lows between 69° and 79°. The average high for August is 98° with an average low of 75°. 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 Corsicana. See also: September | October | November.