S
M
T
W
T
F
S
30
86°
68°
31
91°
64°
1
90°
61°
2
88°
65°
3
86°
70°
4
88°
67°
5
85°
67°
6
84°
66°
7
85°
67°
8
75°
58°
9
79°
51°
10
77°
57°
11
80°
58°
12
73°
49°
13
66°
53°
14
68°
50°
15
67°
49°
16
71°
52°
17
67°
47°
18
66°
47°
19
68°
45°
20
67°
48°
21
70°
47°
22
70°
52°
23
70°
53°
24
73°
52°
25
71°
51°
26
70°
51°
27
72°
53°
28
71°
52°
29
68°
52°
30
69°
50°
1
62°
44°
2
57°
40°
3
57°
37°
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 57° to 80°, with overnight lows between 37° and 58°. The average high for September is 69° 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.
