S
M
T
W
T
F
S
30
82°
66°
31
88°
57°
1
83°
55°
2
88°
63°
3
90°
66°
4
86°
64°
5
84°
63°
6
79°
66°
7
81°
64°
8
84°
55°
9
77°
54°
10
79°
48°
11
86°
64°
12
70°
45°
13
70°
43°
14
61°
45°
15
69°
44°
16
69°
53°
17
75°
57°
18
62°
54°
19
65°
55°
20
65°
55°
21
65°
51°
22
69°
53°
23
68°
52°
24
69°
54°
25
71°
53°
26
71°
53°
27
67°
50°
28
66°
45°
29
66°
51°
30
68°
47°
1
68°
50°
2
64°
50°
3
68°
48°
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 62° to 75°, with overnight lows between 44° and 57°. The average high for September is 68° with an average low of 51°. 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.