S
M
T
W
T
F
S
30
73°
55°
31
74°
60°
1
73°
62°
2
78°
55°
3
73°
51°
4
71°
53°
5
70°
52°
6
70°
55°
7
76°
57°
8
77°
60°
9
79°
59°
10
78°
53°
11
71°
58°
12
71°
55°
13
73°
50°
14
69°
51°
15
67°
50°
16
68°
49°
17
69°
56°
18
73°
46°
19
68°
50°
20
68°
47°
21
70°
49°
22
67°
54°
23
73°
56°
24
75°
55°
25
70°
55°
26
73°
54°
27
73°
55°
28
74°
52°
29
72°
53°
30
71°
54°
1
73°
51°
2
73°
44°
3
70°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Palatine
Palatine's September 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 41° and 62°. The average high for September is 72° with an average low of 53°. 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 Palatine. See also: October | November | December.
