S
M
T
W
T
F
S
30
79°
63°
31
85°
62°
1
86°
62°
2
86°
60°
3
85°
57°
4
78°
61°
5
79°
61°
6
85°
56°
7
82°
54°
8
76°
52°
9
75°
59°
10
76°
60°
11
82°
59°
12
83°
59°
13
83°
55°
14
82°
50°
15
74°
51°
16
72°
54°
17
73°
48°
18
72°
48°
19
73°
45°
20
71°
46°
21
71°
52°
22
72°
54°
23
78°
54°
24
78°
55°
25
78°
55°
26
78°
54°
27
79°
55°
28
77°
50°
29
75°
49°
30
71°
50°
1
73°
49°
2
77°
52°
3
68°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hiawatha
Hiawatha's September 2026 forecast shows daily high temperatures ranging from 68° to 86°, with overnight lows between 42° and 63°. The average high for September is 77° with an average low of 54°. 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 Hiawatha. See also: October | November | December.
