S
M
T
W
T
F
S
30
90°
71°
31
90°
71°
1
89°
70°
2
90°
71°
3
88°
70°
4
86°
67°
5
84°
66°
6
87°
66°
7
88°
69°
8
89°
70°
9
89°
70°
10
88°
69°
11
89°
70°
12
89°
70°
13
87°
69°
14
88°
65°
15
89°
68°
16
89°
66°
17
88°
67°
18
81°
61°
19
86°
58°
20
79°
59°
21
79°
59°
22
80°
60°
23
81°
62°
24
84°
63°
25
84°
58°
26
77°
57°
27
78°
59°
28
80°
60°
29
79°
62°
30
82°
58°
1
81°
61°
2
81°
61°
3
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Northlake
Northlake's September 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 57° and 71°. The average high for September is 85° with an average low of 65°. 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 Northlake. See also: October | November | December.
