S
M
T
W
T
F
S
28
80°
65°
29
90°
76°
30
89°
70°
1
85°
69°
2
78°
67°
3
80°
65°
4
81°
63°
5
84°
62°
6
84°
63°
7
87°
65°
8
87°
67°
9
83°
65°
10
83°
62°
11
84°
64°
12
86°
61°
13
87°
65°
14
89°
64°
15
90°
69°
16
91°
70°
17
91°
71°
18
89°
68°
19
89°
69°
20
88°
58°
21
82°
59°
22
79°
57°
23
79°
57°
24
83°
60°
25
83°
62°
26
82°
64°
27
84°
68°
28
78°
62°
29
76°
62°
30
77°
61°
31
80°
64°
1
77°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mason City
Mason City's July 2026 forecast shows daily high temperatures ranging from 76° to 91°, with overnight lows between 57° and 71°. The average high for July is 84° 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 Mason City. See also: August | September | October.
