S
M
T
W
T
F
S
26
73°
53°
27
72°
54°
28
75°
55°
29
74°
55°
30
72°
54°
31
72°
55°
1
74°
53°
2
73°
51°
3
72°
50°
4
74°
52°
5
76°
55°
6
77°
56°
7
76°
56°
8
74°
54°
9
72°
51°
10
71°
51°
11
71°
50°
12
72°
53°
13
73°
53°
14
71°
54°
15
71°
53°
16
72°
53°
17
74°
52°
18
75°
53°
19
74°
55°
20
75°
55°
21
74°
54°
22
75°
55°
23
75°
54°
24
74°
54°
25
74°
53°
26
73°
54°
27
73°
53°
28
72°
54°
29
72°
54°
30
73°
50°
31
71°
49°
1
70°
50°
2
70°
53°
3
72°
54°
4
71°
50°
5
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marshfield
Marshfield's August 2026 forecast shows daily high temperatures ranging from 70° to 77°, with overnight lows between 49° and 56°. The average high for August is 73° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Marshfield. See also: September | October | November.