S
M
T
W
T
F
S
30
86°
58°
31
84°
57°
1
79°
62°
2
79°
61°
3
83°
57°
4
84°
63°
5
86°
63°
6
86°
56°
7
84°
55°
8
77°
54°
9
77°
55°
10
81°
57°
11
83°
57°
12
82°
56°
13
76°
53°
14
75°
59°
15
79°
60°
16
82°
52°
17
81°
51°
18
73°
49°
19
72°
51°
20
73°
56°
21
72°
56°
22
73°
50°
23
72°
53°
24
71°
51°
25
72°
55°
26
75°
55°
27
78°
52°
28
78°
47°
29
71°
53°
30
71°
53°
1
70°
54°
2
73°
52°
3
72°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Culpeper
Culpeper's September 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 45° and 63°. The average high for September is 77° with an average low of 55°. 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 Culpeper. See also: October | November | December.