S
M
T
W
T
F
S
30
72°
54°
31
75°
57°
1
79°
57°
2
77°
58°
3
79°
54°
4
76°
48°
5
74°
49°
6
68°
45°
7
70°
54°
8
76°
55°
9
77°
56°
10
78°
53°
11
75°
51°
12
69°
54°
13
71°
49°
14
70°
51°
15
67°
53°
16
70°
52°
17
71°
50°
18
74°
48°
19
68°
49°
20
71°
45°
21
69°
42°
22
64°
49°
23
64°
52°
24
73°
52°
25
73°
50°
26
70°
52°
27
70°
50°
28
73°
46°
29
70°
48°
30
65°
51°
1
70°
41°
2
71°
39°
3
60°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hammond
Hammond's September 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 38° and 58°. The average high for September is 71° with an average low of 50°. 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 Hammond. See also: October | November | December.
