S
M
T
W
T
F
S
30
96°
74°
31
95°
74°
1
91°
78°
2
94°
78°
3
88°
76°
4
90°
75°
5
92°
73°
6
94°
76°
7
95°
74°
8
94°
75°
9
93°
76°
10
94°
75°
11
94°
72°
12
92°
75°
13
93°
74°
14
92°
71°
15
89°
74°
16
92°
73°
17
92°
74°
18
91°
73°
19
91°
73°
20
90°
72°
21
86°
73°
22
83°
73°
23
84°
72°
24
85°
71°
25
87°
72°
26
87°
70°
27
90°
71°
28
91°
70°
29
90°
69°
30
90°
70°
1
89°
71°
2
87°
70°
3
88°
70°
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 83° to 95°, with overnight lows between 69° and 78°. The average high for September is 90° with an average low of 73°. 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.