S
M
T
W
T
F
S
30
88°
59°
31
81°
61°
1
86°
56°
2
79°
54°
3
79°
60°
4
86°
63°
5
86°
62°
6
87°
59°
7
86°
60°
8
81°
60°
9
81°
55°
10
80°
52°
11
76°
54°
12
78°
56°
13
76°
59°
14
81°
60°
15
82°
59°
16
82°
56°
17
78°
48°
18
75°
46°
19
72°
48°
20
72°
49°
21
74°
55°
22
79°
58°
23
79°
58°
24
80°
54°
25
81°
46°
26
76°
47°
27
69°
46°
28
70°
44°
29
70°
45°
30
70°
55°
1
81°
52°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
73°
48°
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 69° to 88°, with overnight lows between 44° and 63°. The average high for September is 79° 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.
