S
M
T
W
T
F
S
30
74°
41°
31
76°
45°
1
81°
48°
2
83°
51°
3
82°
49°
4
78°
40°
5
70°
40°
6
73°
42°
7
77°
45°
8
79°
44°
9
76°
44°
10
76°
39°
11
73°
40°
12
74°
44°
13
70°
38°
14
68°
37°
15
67°
36°
16
67°
34°
17
68°
37°
18
68°
37°
19
72°
42°
20
77°
41°
21
76°
38°
22
68°
36°
23
65°
36°
24
64°
35°
25
62°
33°
26
63°
34°
27
65°
33°
28
67°
38°
29
70°
38°
30
61°
31°
1
73°
44°
2
73°
43°
3
Hist. Avg.
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Danville
Danville's September 2026 forecast shows daily high temperatures ranging from 61° to 83°, with overnight lows between 31° and 51°. The average high for September is 72° with an average low of 40°. 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 Danville. See also: October | November | December.
