S
M
T
W
T
F
S
28
83°
66°
29
90°
67°
30
90°
72°
1
94°
72°
2
93°
73°
3
95°
71°
4
90°
69°
5
87°
70°
6
83°
67°
7
84°
67°
8
86°
69°
9
87°
69°
10
81°
69°
11
80°
63°
12
83°
63°
13
85°
64°
14
87°
68°
15
88°
67°
16
82°
64°
17
82°
64°
18
80°
64°
19
84°
66°
20
83°
63°
21
78°
59°
22
78°
60°
23
79°
60°
24
80°
64°
25
82°
65°
26
79°
64°
27
81°
66°
28
85°
66°
29
85°
65°
30
84°
67°
31
83°
66°
1
81°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in West Lafayette
West Lafayette's July 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 59° and 69°. The average high for July is 83° with an average low of 65°. 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 West Lafayette. See also: August | September | October.