S
M
T
W
T
F
S
26
90°
70°
27
87°
69°
28
89°
67°
29
82°
64°
30
82°
68°
31
83°
66°
1
83°
68°
2
89°
70°
3
89°
69°
4
88°
68°
5
86°
67°
6
88°
69°
7
89°
70°
8
89°
69°
9
90°
68°
10
86°
65°
11
85°
67°
12
88°
68°
13
86°
67°
14
81°
61°
15
80°
60°
16
80°
60°
17
81°
63°
18
83°
65°
19
84°
64°
20
86°
66°
21
85°
66°
22
83°
63°
23
84°
65°
24
87°
58°
25
83°
61°
26
85°
64°
27
87°
65°
28
81°
64°
29
83°
60°
30
80°
61°
31
80°
63°
1
81°
64°
2
80°
62°
3
80°
55°
4
78°
53°
5
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Terre Haute
Terre Haute's August 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 53° and 70°. The average high for August is 84° with an average low of 64°. 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 Terre Haute. See also: September | October | November.