S
M
T
W
T
F
S
30
90°
70°
31
94°
69°
1
98°
69°
2
99°
71°
3
100°
73°
4
99°
72°
5
99°
73°
6
97°
71°
7
83°
70°
8
87°
67°
9
89°
66°
10
93°
66°
11
94°
69°
12
83°
72°
13
92°
71°
14
94°
69°
15
83°
72°
16
88°
69°
17
92°
64°
18
96°
68°
19
91°
70°
20
91°
69°
21
92°
68°
22
85°
71°
23
71°
62°
24
66°
55°
25
78°
50°
26
82°
51°
27
83°
52°
28
84°
54°
29
87°
59°
30
87°
64°
1
82°
65°
2
81°
64°
3
79°
64°
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 66° to 87°, with overnight lows between 50° and 65°. The average high for September is 81° with an average low of 58°. 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.
