S
M
T
W
T
F
S
28
104°
72°
29
101°
71°
30
99°
75°
1
101°
75°
2
103°
72°
3
103°
73°
4
107°
75°
5
109°
77°
6
110°
78°
7
110°
79°
8
109°
78°
9
107°
80°
10
108°
79°
11
104°
82°
12
103°
80°
13
108°
83°
14
102°
82°
15
102°
80°
16
103°
82°
17
106°
83°
18
109°
83°
19
109°
82°
20
108°
83°
21
108°
81°
22
104°
79°
23
103°
78°
24
104°
78°
25
103°
79°
26
104°
80°
27
106°
82°
28
107°
81°
29
105°
82°
30
104°
82°
31
105°
84°
1
107°
85°
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 71° and 85°. The average high for July is 105° 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.
