S
M
T
W
T
F
S
30
63°
55°
31
66°
52°
1
64°
54°
2
63°
54°
3
66°
57°
4
64°
55°
5
64°
50°
6
69°
52°
7
64°
49°
8
60°
46°
9
63°
48°
10
62°
52°
11
64°
47°
12
62°
55°
13
61°
50°
14
64°
50°
15
63°
49°
16
61°
49°
17
62°
50°
18
63°
52°
19
60°
48°
20
63°
47°
21
63°
49°
22
62°
48°
23
62°
48°
24
63°
46°
25
60°
43°
26
59°
42°
27
60°
44°
28
61°
45°
29
60°
45°
30
61°
43°
1
58°
46°
2
61°
46°
3
61°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dumfries
Dumfries's September 2026 forecast shows daily high temperatures ranging from 58° to 69°, with overnight lows between 42° and 55°. The average high for September is 62° with an average low of 48°. 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 Dumfries. See also: October | November | December.
