S
M
T
W
T
F
S
30
75°
56°
31
75°
58°
1
74°
57°
2
71°
58°
3
75°
59°
4
70°
54°
5
73°
55°
6
73°
58°
7
74°
60°
8
71°
60°
9
79°
61°
10
78°
61°
11
76°
59°
12
75°
58°
13
71°
57°
14
69°
56°
15
69°
55°
16
70°
55°
17
69°
54°
18
70°
54°
19
71°
55°
20
70°
57°
21
71°
59°
22
77°
58°
23
77°
57°
24
76°
57°
25
77°
56°
26
77°
59°
27
76°
59°
28
71°
58°
29
72°
59°
30
74°
59°
1
76°
58°
2
76°
56°
3
74°
55°
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 69° to 79°, with overnight lows between 54° and 61°. The average high for September is 73° with an average low of 57°. 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.