S
M
T
W
T
F
S
28
75°
63°
29
74°
64°
30
78°
66°
1
79°
64°
2
76°
62°
3
76°
66°
4
77°
61°
5
73°
60°
6
75°
63°
7
76°
64°
8
76°
64°
9
77°
67°
10
79°
67°
11
77°
66°
12
77°
67°
13
81°
68°
14
79°
67°
15
78°
65°
16
77°
67°
17
79°
68°
18
80°
68°
19
82°
67°
20
79°
63°
21
81°
64°
22
83°
63°
23
84°
61°
24
79°
59°
25
76°
60°
26
76°
59°
27
77°
61°
28
77°
65°
29
78°
66°
30
80°
67°
31
81°
68°
1
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Marysville
Marysville's July 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 59° and 68°. The average high for July is 78° with an average low of 64°. 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 Marysville. See also: August | September | October.