S
M
T
W
T
F
S
28
104°
72°
29
101°
71°
30
99°
75°
1
101°
70°
2
103°
72°
3
106°
71°
4
107°
75°
5
109°
77°
6
110°
78°
7
108°
77°
8
109°
78°
9
107°
79°
10
108°
82°
11
104°
82°
12
103°
80°
13
103°
82°
14
108°
83°
15
109°
84°
16
108°
84°
17
104°
83°
18
103°
83°
19
103°
82°
20
101°
79°
21
100°
78°
22
100°
79°
23
101°
78°
24
101°
78°
25
102°
79°
26
102°
79°
27
103°
80°
28
103°
84°
29
108°
84°
30
102°
82°
31
103°
83°
1
105°
84°
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 99° to 110°, with overnight lows between 70° and 84°. The average high for July is 104° with an average low of 79°. 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.
