S
M
T
W
T
F
S
26
86°
69°
27
85°
63°
28
85°
63°
29
86°
67°
30
87°
65°
31
87°
68°
1
89°
68°
2
89°
65°
3
85°
64°
4
83°
62°
5
84°
63°
6
84°
63°
7
85°
64°
8
85°
63°
9
86°
67°
10
89°
65°
11
87°
68°
12
87°
68°
13
89°
69°
14
91°
68°
15
91°
62°
16
89°
62°
17
85°
63°
18
87°
66°
19
90°
61°
20
84°
61°
21
83°
62°
22
84°
62°
23
87°
65°
24
91°
66°
25
90°
67°
26
91°
64°
27
88°
61°
28
84°
60°
29
84°
66°
30
89°
65°
31
89°
66°
1
88°
65°
2
89°
65°
3
88°
64°
4
87°
64°
5
85°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in New Harmony
New Harmony's August 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 60° and 69°. The average high for August is 87° with an average low of 65°. 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 New Harmony. See also: September | October | November.