S
M
T
W
T
F
S
30
81°
55°
31
74°
60°
1
74°
61°
2
75°
60°
3
80°
64°
4
83°
61°
5
82°
54°
6
74°
53°
7
74°
53°
8
72°
55°
9
77°
59°
10
74°
55°
11
71°
50°
12
70°
49°
13
71°
53°
14
70°
50°
15
69°
48°
16
69°
47°
17
67°
47°
18
66°
48°
19
66°
47°
20
66°
47°
21
67°
48°
22
67°
49°
23
69°
53°
24
70°
53°
25
73°
54°
26
73°
46°
27
72°
45°
28
64°
52°
29
64°
50°
30
71°
51°
1
68°
50°
2
66°
48°
3
62°
47°
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 62° to 83°, with overnight lows between 45° and 64°. The average high for September is 71° 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 Palatine. See also: October | November | December.
