S
M
T
W
T
F
S
26
95°
70°
27
96°
74°
28
96°
71°
29
97°
73°
30
98°
76°
31
98°
77°
1
92°
78°
2
97°
72°
3
98°
69°
4
99°
72°
5
97°
73°
6
99°
73°
7
99°
74°
8
98°
72°
9
95°
72°
10
91°
71°
11
97°
71°
12
99°
72°
13
100°
78°
14
98°
76°
15
101°
74°
16
100°
70°
17
101°
69°
18
100°
77°
19
100°
79°
20
102°
76°
21
103°
79°
22
106°
78°
23
102°
78°
24
101°
76°
25
101°
78°
26
100°
78°
27
97°
76°
28
94°
73°
29
95°
72°
30
92°
74°
31
97°
72°
1
97°
73°
2
96°
73°
3
97°
72°
4
95°
73°
5
92°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Willis
Willis's August 2026 forecast shows daily high temperatures ranging from 92° to 101°, with overnight lows between 72° and 78°. The average high for August is 96° with an average low of 74°. 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 Willis. See also: September | October | November.