S
M
T
W
T
F
S
30
80°
62°
31
76°
63°
1
77°
63°
2
81°
58°
3
81°
53°
4
73°
54°
5
72°
61°
6
78°
57°
7
77°
53°
8
71°
55°
9
70°
57°
10
71°
60°
11
74°
59°
12
79°
60°
13
78°
59°
14
78°
54°
15
77°
52°
16
69°
53°
17
69°
49°
18
70°
49°
19
68°
46°
20
66°
46°
21
65°
47°
22
66°
54°
23
67°
47°
24
69°
53°
25
71°
54°
26
68°
55°
27
73°
54°
28
73°
51°
29
72°
48°
30
65°
49°
1
66°
50°
2
71°
51°
3
64°
42°
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 64° to 81°, with overnight lows between 42° and 63°. The average high for September is 72° with an average low of 54°. 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.
