S
M
T
W
T
F
S
28
84°
66°
29
91°
75°
30
91°
75°
1
91°
77°
2
93°
72°
3
90°
70°
4
84°
70°
5
81°
70°
6
82°
66°
7
84°
66°
8
86°
66°
9
86°
72°
10
84°
72°
11
83°
65°
12
89°
62°
13
91°
67°
14
93°
69°
15
94°
70°
16
93°
70°
17
92°
70°
18
91°
67°
19
89°
67°
20
85°
62°
21
83°
63°
22
81°
62°
23
83°
61°
24
85°
64°
25
84°
63°
26
89°
68°
27
85°
66°
28
85°
63°
29
79°
60°
30
78°
60°
31
79°
63°
1
82°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in LaSalle
LaSalle's July 2026 forecast shows daily high temperatures ranging from 78° to 94°, with overnight lows between 60° and 70°. The average high for July is 86° 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 LaSalle. See also: August | September | October.