S
M
T
W
T
F
S
30
87°
67°
31
87°
67°
1
86°
66°
2
86°
63°
3
84°
62°
4
86°
65°
5
86°
64°
6
85°
64°
7
87°
65°
8
88°
66°
9
88°
66°
10
87°
65°
11
86°
65°
12
87°
64°
13
87°
66°
14
84°
59°
15
76°
57°
16
78°
61°
17
80°
59°
18
76°
54°
19
74°
51°
20
75°
54°
21
81°
53°
22
83°
54°
23
82°
56°
24
79°
52°
25
74°
56°
26
80°
56°
27
78°
55°
28
80°
55°
29
73°
47°
30
71°
49°
1
76°
50°
2
79°
50°
3
79°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Richmond
Richmond's September 2026 forecast shows daily high temperatures ranging from 71° to 88°, with overnight lows between 47° and 67°. The average high for September is 82° with an average low of 59°. 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 Richmond. See also: October | November | December.