S
M
T
W
T
F
S
30
72°
55°
31
68°
55°
1
68°
55°
2
68°
61°
3
70°
64°
4
68°
57°
5
66°
52°
6
77°
57°
7
66°
59°
8
66°
52°
9
67°
51°
10
67°
55°
11
69°
49°
12
69°
60°
13
73°
59°
14
73°
59°
15
70°
51°
16
67°
50°
17
68°
51°
18
69°
53°
19
67°
51°
20
68°
52°
21
68°
53°
22
68°
52°
23
67°
52°
24
67°
51°
25
65°
47°
26
63°
47°
27
64°
45°
28
65°
46°
29
63°
50°
30
64°
50°
1
63°
45°
2
64°
49°
3
64°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marshfield
Marshfield's September 2026 forecast shows daily high temperatures ranging from 63° to 73°, with overnight lows between 45° and 60°. The average high for September is 67° with an average low of 51°. 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 Marshfield. See also: October | November | December.
