S
M
T
W
T
F
S
26
86°
68°
27
84°
69°
28
80°
64°
29
81°
60°
30
82°
59°
31
84°
67°
1
73°
64°
2
76°
58°
3
79°
59°
4
80°
60°
5
80°
61°
6
81°
60°
7
82°
64°
8
85°
65°
9
86°
61°
10
83°
61°
11
82°
64°
12
83°
60°
13
80°
63°
14
76°
56°
15
75°
55°
16
75°
62°
17
80°
61°
18
76°
58°
19
75°
58°
20
75°
60°
21
77°
55°
22
74°
54°
23
74°
54°
24
75°
55°
25
73°
54°
26
73°
53°
27
74°
57°
28
76°
58°
29
79°
60°
30
80°
61°
31
74°
62°
1
77°
61°
2
77°
54°
3
72°
52°
4
73°
53°
5
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marcellus
Marcellus's August 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 52° and 67°. The average high for August is 78° with an average low of 59°. 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 Marcellus. See also: September | October | November.
