S
M
T
W
T
F
S
30
78°
53°
31
78°
55°
1
77°
55°
2
78°
54°
3
77°
46°
4
70°
45°
5
69°
49°
6
71°
54°
7
76°
54°
8
76°
53°
9
72°
46°
10
71°
52°
11
74°
51°
12
74°
53°
13
75°
53°
14
74°
52°
15
75°
51°
16
74°
50°
17
69°
49°
18
73°
44°
19
65°
42°
20
65°
41°
21
62°
39°
22
63°
48°
23
64°
44°
24
63°
40°
25
61°
39°
26
62°
46°
27
68°
47°
28
69°
46°
29
68°
45°
30
67°
44°
1
60°
45°
2
66°
38°
3
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marshburg
Marshburg's September 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 38° and 55°. The average high for September is 70° 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 Marshburg. See also: October | November | December.