S
M
T
W
T
F
S
26
92°
72°
27
92°
71°
28
92°
74°
29
85°
66°
30
86°
65°
31
83°
65°
1
78°
68°
2
77°
67°
3
82°
66°
4
85°
68°
5
87°
69°
6
89°
71°
7
88°
69°
8
90°
72°
9
89°
71°
10
93°
71°
11
92°
70°
12
91°
68°
13
90°
70°
14
94°
77°
15
82°
64°
16
82°
64°
17
92°
72°
18
92°
72°
19
91°
71°
20
92°
71°
21
91°
70°
22
91°
70°
23
92°
72°
24
90°
70°
25
88°
71°
26
86°
70°
27
86°
70°
28
89°
69°
29
90°
68°
30
89°
69°
31
89°
69°
1
88°
68°
2
89°
68°
3
88°
66°
4
88°
67°
5
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Evansville
Evansville's August 2026 forecast shows daily high temperatures ranging from 77° to 94°, with overnight lows between 64° and 77°. The average high for August is 88° with an average low of 69°. 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 Evansville. See also: September | October | November.