S
M
T
W
T
F
S
26
95°
72°
27
87°
67°
28
89°
72°
29
92°
72°
30
86°
70°
31
76°
64°
1
83°
63°
2
85°
64°
3
85°
63°
4
72°
53°
5
79°
52°
6
83°
58°
7
76°
61°
8
82°
53°
9
81°
64°
10
81°
62°
11
83°
67°
12
85°
65°
13
81°
69°
14
84°
66°
15
84°
65°
16
78°
60°
17
82°
55°
18
75°
59°
19
79°
55°
20
85°
63°
21
79°
61°
22
75°
58°
23
78°
53°
24
82°
63°
25
83°
60°
26
79°
53°
27
77°
53°
28
77°
63°
29
78°
64°
30
83°
63°
31
75°
57°
1
74°
57°
2
76°
56°
3
78°
58°
4
77°
59°
5
74°
60°
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 74° to 83°, with overnight lows between 53° and 64°. The average high for August is 78° with an average low of 59°. 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.