S
M
T
W
T
F
S
31
74°
46°
1
77°
47°
2
79°
49°
3
76°
53°
4
65°
47°
5
67°
50°
6
65°
47°
7
67°
43°
8
69°
38°
9
75°
41°
10
79°
50°
11
81°
46°
12
82°
49°
13
73°
53°
14
85°
57°
15
85°
51°
16
83°
50°
17
84°
51°
18
86°
50°
19
88°
55°
20
85°
60°
21
80°
61°
22
76°
62°
23
71°
60°
24
73°
61°
25
74°
54°
26
78°
50°
27
84°
55°
28
83°
54°
29
83°
54°
30
82°
50°
1
78°
54°
2
80°
44°
3
87°
50°
4
86°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marcellus
Marcellus's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Marcellus. See also: October | November | December.
