S
M
T
W
T
F
S
28
95°
57°
29
94°
56°
30
94°
59°
1
96°
58°
2
94°
58°
3
90°
57°
4
92°
51°
5
85°
51°
6
87°
54°
7
85°
52°
8
82°
52°
9
84°
54°
10
84°
56°
11
82°
53°
12
83°
53°
13
87°
55°
14
87°
55°
15
95°
51°
16
93°
59°
17
91°
58°
18
Hist. Avg.
94°
65°
19
Hist. Avg.
94°
65°
20
Hist. Avg.
94°
65°
21
Hist. Avg.
94°
65°
22
Hist. Avg.
94°
65°
23
Hist. Avg.
94°
65°
24
Hist. Avg.
93°
65°
25
Hist. Avg.
93°
65°
26
Hist. Avg.
93°
65°
27
Hist. Avg.
93°
65°
28
Hist. Avg.
93°
65°
29
Hist. Avg.
93°
65°
30
Hist. Avg.
93°
65°
31
Hist. Avg.
93°
65°
1
Hist. Avg.
93°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in San Luis
San Luis's July 2026 forecast shows daily high temperatures ranging from 82° to 96°, with overnight lows between 51° and 59°. The average high for July is 89° with an average low of 55°. 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.