S
M
T
W
T
F
S
30
80°
58°
31
82°
61°
1
84°
62°
2
85°
62°
3
85°
61°
4
84°
62°
5
84°
61°
6
79°
60°
7
78°
59°
8
80°
61°
9
81°
56°
10
82°
55°
11
78°
60°
12
81°
59°
13
82°
60°
14
80°
58°
15
82°
59°
16
79°
58°
17
74°
58°
18
Hist. Avg.
79°
55°
19
Hist. Avg.
78°
55°
20
Hist. Avg.
78°
54°
21
Hist. Avg.
78°
54°
22
Hist. Avg.
77°
53°
23
Hist. Avg.
77°
53°
24
Hist. Avg.
77°
52°
25
Hist. Avg.
76°
52°
26
Hist. Avg.
76°
51°
27
Hist. Avg.
76°
50°
28
Hist. Avg.
75°
50°
29
Hist. Avg.
75°
49°
30
Hist. Avg.
75°
49°
1
Hist. Avg.
74°
48°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
74°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Culpeper
Culpeper's September 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 55° and 62°. The average high for September is 81° with an average low of 59°. 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.