S
M
T
W
T
F
S
30
84°
64°
31
86°
67°
1
87°
72°
2
88°
66°
3
89°
66°
4
87°
64°
5
77°
59°
6
80°
57°
7
77°
57°
8
77°
59°
9
78°
61°
10
81°
58°
11
75°
59°
12
74°
55°
13
75°
56°
14
76°
57°
15
75°
51°
16
68°
56°
17
68°
55°
18
67°
55°
19
73°
55°
20
74°
54°
21
70°
55°
22
72°
55°
23
71°
53°
24
69°
52°
25
70°
54°
26
71°
54°
27
71°
49°
28
63°
43°
29
61°
42°
30
63°
43°
1
62°
46°
2
66°
50°
3
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Richwood
Richwood's September 2026 forecast shows daily high temperatures ranging from 61° to 89°, with overnight lows between 42° and 66°. The average high for September is 73° with an average low of 55°. 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 Richwood. See also: October | November | December.
