S
M
T
W
T
F
S
30
83°
56°
31
77°
61°
1
77°
62°
2
76°
62°
3
83°
66°
4
86°
62°
5
84°
55°
6
77°
55°
7
76°
54°
8
75°
56°
9
80°
61°
10
77°
56°
11
74°
51°
12
73°
51°
13
74°
54°
14
73°
51°
15
72°
50°
16
72°
49°
17
70°
49°
18
70°
50°
19
71°
49°
20
69°
48°
21
70°
48°
22
70°
50°
23
72°
54°
24
74°
55°
25
76°
56°
26
76°
47°
27
75°
47°
28
68°
54°
29
67°
51°
30
74°
51°
1
72°
52°
2
69°
49°
3
65°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Richton Park
Richton Park's September 2026 forecast shows daily high temperatures ranging from 65° to 86°, with overnight lows between 47° and 66°. The average high for September is 74° 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 Richton Park. See also: October | November | December.