S
M
T
W
T
F
S
30
83°
67°
31
88°
69°
1
91°
69°
2
95°
76°
3
90°
73°
4
89°
71°
5
84°
69°
6
79°
56°
7
81°
59°
8
83°
72°
9
83°
64°
10
73°
56°
11
76°
60°
12
80°
65°
13
78°
60°
14
74°
56°
15
71°
56°
16
76°
58°
17
75°
58°
18
73°
57°
19
74°
56°
20
77°
58°
21
71°
56°
22
68°
55°
23
68°
56°
24
75°
56°
25
76°
55°
26
76°
55°
27
75°
54°
28
76°
57°
29
76°
57°
30
77°
56°
1
75°
53°
2
74°
48°
3
62°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Benton Harbor
Benton Harbor's September 2026 forecast shows daily high temperatures ranging from 62° to 83°, with overnight lows between 45° and 72°. The average high for September is 75° with an average low of 57°. 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 Benton Harbor. See also: October | November | December.
