S
M
T
W
T
F
S
30
81°
63°
31
88°
68°
1
90°
66°
2
94°
70°
3
94°
72°
4
92°
69°
5
82°
63°
6
83°
59°
7
81°
61°
8
82°
64°
9
87°
67°
10
86°
62°
11
78°
61°
12
80°
59°
13
79°
61°
14
75°
58°
15
77°
55°
16
81°
60°
17
80°
59°
18
76°
59°
19
80°
60°
20
78°
59°
21
77°
59°
22
77°
57°
23
76°
53°
24
72°
55°
25
79°
57°
26
75°
51°
27
68°
47°
28
67°
45°
29
66°
46°
30
67°
45°
1
65°
44°
2
66°
50°
3
71°
53°
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 65° to 94°, with overnight lows between 44° and 72°. The average high for September is 78° with an average low of 58°. 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.