S
M
T
W
T
F
S
28
87°
69°
29
90°
75°
30
90°
77°
1
92°
71°
2
87°
70°
3
90°
71°
4
87°
68°
5
86°
69°
6
84°
69°
7
85°
70°
8
89°
68°
9
90°
67°
10
83°
66°
11
86°
68°
12
87°
65°
13
83°
64°
14
84°
63°
15
82°
63°
16
86°
66°
17
79°
63°
18
83°
67°
19
85°
68°
20
86°
67°
21
86°
67°
22
87°
68°
23
87°
68°
24
86°
67°
25
85°
67°
26
84°
66°
27
85°
67°
28
86°
66°
29
86°
67°
30
85°
66°
31
81°
65°
1
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Marshalltown
Marshalltown's July 2026 forecast shows daily high temperatures ranging from 78° to 92°, with overnight lows between 61° and 71°. The average high for July is 85° with an average low of 67°. 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 Marshalltown. See also: August | September | October.
