S
M
T
W
T
F
S
28
79°
60°
29
76°
57°
30
76°
56°
1
77°
58°
2
77°
61°
3
78°
58°
4
77°
59°
5
79°
64°
6
82°
65°
7
85°
66°
8
86°
66°
9
86°
65°
10
85°
66°
11
86°
65°
12
85°
64°
13
82°
62°
14
83°
64°
15
84°
65°
16
80°
58°
17
77°
57°
18
77°
57°
19
78°
60°
20
78°
57°
21
77°
57°
22
78°
58°
23
80°
62°
24
84°
64°
25
85°
65°
26
85°
65°
27
78°
58°
28
78°
61°
29
81°
63°
30
80°
59°
31
80°
56°
1
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Marcellus
Marcellus's July 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 56° and 66°. The average high for July is 80° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Marcellus. See also: August | September | October.
