S
M
T
W
T
F
S
26
85°
65°
27
78°
58°
28
78°
61°
29
81°
63°
30
80°
59°
31
80°
56°
1
78°
57°
2
78°
55°
3
77°
56°
4
77°
55°
5
78°
56°
6
78°
57°
7
79°
58°
8
79°
62°
9
82°
63°
10
83°
63°
11
82°
62°
12
84°
64°
13
83°
57°
14
83°
55°
15
77°
56°
16
78°
56°
17
78°
57°
18
77°
55°
19
76°
54°
20
76°
55°
21
76°
56°
22
76°
55°
23
76°
55°
24
77°
57°
25
76°
61°
26
78°
63°
27
82°
63°
28
84°
60°
29
84°
53°
30
81°
57°
31
77°
54°
1
75°
58°
2
75°
59°
3
80°
51°
4
75°
55°
5
75°
60°
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 75° to 85°, with overnight lows between 51° and 65°. The average high for August is 79° with an average low of 58°. 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.
