S
M
T
W
T
F
S
30
89°
65°
31
89°
66°
1
88°
65°
2
89°
65°
3
88°
64°
4
87°
64°
5
85°
63°
6
82°
62°
7
82°
64°
8
84°
62°
9
87°
61°
10
84°
63°
11
87°
62°
12
85°
61°
13
85°
62°
14
86°
60°
15
86°
62°
16
Hist. Avg.
82°
58°
17
Hist. Avg.
82°
58°
18
Hist. Avg.
81°
58°
19
Hist. Avg.
81°
57°
20
Hist. Avg.
81°
57°
21
Hist. Avg.
80°
57°
22
Hist. Avg.
80°
56°
23
Hist. Avg.
80°
56°
24
Hist. Avg.
79°
56°
25
Hist. Avg.
79°
55°
26
Hist. Avg.
79°
55°
27
Hist. Avg.
78°
54°
28
Hist. Avg.
78°
54°
29
Hist. Avg.
78°
54°
30
Hist. Avg.
77°
53°
1
Hist. Avg.
77°
53°
2
Hist. Avg.
77°
53°
3
Hist. Avg.
76°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in New Harmony
New Harmony's September 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 60° and 66°. The average high for September is 86° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in New Harmony. See also: October | November | December.
