S
M
T
W
T
F
S
30
75°
55°
31
75°
54°
1
76°
54°
2
74°
53°
3
75°
53°
4
75°
54°
5
76°
57°
6
75°
56°
7
74°
56°
8
75°
54°
9
73°
51°
10
74°
50°
11
73°
50°
12
73°
51°
13
74°
51°
14
72°
55°
15
78°
58°
16
79°
58°
17
78°
57°
18
78°
48°
19
76°
47°
20
70°
48°
21
69°
54°
22
70°
55°
23
75°
56°
24
74°
55°
25
75°
45°
26
74°
43°
27
66°
44°
28
64°
45°
29
65°
45°
30
66°
50°
1
65°
51°
2
Hist. Avg.
69°
50°
3
Hist. Avg.
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lombard
Lombard's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 43° and 58°. The average high for September is 73° with an average low of 52°. 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 Lombard. See also: October | November | December.
