S
M
T
W
T
F
S
28
N/A
29
97°
79°
30
90°
75°
1
92°
78°
2
90°
77°
3
95°
78°
4
93°
78°
5
97°
79°
6
95°
79°
7
96°
80°
8
95°
79°
9
93°
78°
10
94°
80°
11
89°
76°
12
90°
76°
13
89°
76°
14
90°
75°
15
91°
76°
16
91°
76°
17
90°
75°
18
90°
77°
19
91°
77°
20
91°
78°
21
90°
76°
22
89°
76°
23
89°
77°
24
90°
77°
25
89°
76°
26
88°
77°
27
88°
76°
28
89°
77°
29
89°
77°
30
90°
76°
31
87°
76°
1
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in San Luis
San Luis's July 2026 forecast shows daily high temperatures ranging from 87° to 97°, with overnight lows between 75° and 80°. The average high for July is 91° with an average low of 77°. 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 San Luis. See also: August | September | October.
