S
M
T
W
T
F
S
28
84°
63°
29
87°
64°
30
86°
66°
1
88°
66°
2
86°
62°
3
87°
60°
4
80°
56°
5
79°
58°
6
81°
64°
7
82°
59°
8
79°
59°
9
78°
60°
10
80°
59°
11
79°
58°
12
82°
64°
13
82°
63°
14
86°
67°
15
86°
67°
16
87°
66°
17
88°
59°
18
81°
58°
19
78°
57°
20
79°
61°
21
80°
68°
22
81°
68°
23
Hist. Avg.
83°
63°
24
Hist. Avg.
83°
63°
25
Hist. Avg.
83°
63°
26
Hist. Avg.
83°
62°
27
Hist. Avg.
83°
62°
28
Hist. Avg.
83°
62°
29
Hist. Avg.
83°
62°
30
Hist. Avg.
83°
62°
31
Hist. Avg.
83°
62°
1
Hist. Avg.
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Merrillville
Merrillville's July 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 56° and 68°. The average high for July is 83° with an average low of 62°. 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 Merrillville. See also: August | September | October.
