S
M
T
W
T
F
S
30
90°
71°
31
N/A
1
95°
73°
2
94°
75°
3
98°
74°
4
93°
70°
5
85°
64°
6
81°
63°
7
84°
63°
8
82°
65°
9
86°
65°
10
83°
65°
11
84°
61°
12
77°
60°
13
76°
60°
14
82°
65°
15
79°
64°
16
75°
65°
17
75°
61°
18
76°
57°
19
73°
55°
20
74°
57°
21
76°
58°
22
79°
60°
23
80°
63°
24
81°
62°
25
80°
61°
26
78°
61°
27
77°
62°
28
77°
61°
29
79°
60°
30
75°
59°
1
71°
57°
2
72°
58°
3
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dahlgren
Dahlgren's September 2026 forecast shows daily high temperatures ranging from 71° to 98°, with overnight lows between 55° and 75°. The average high for September is 80° with an average low of 62°. 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 Dahlgren. See also: October | November | December.
