S
M
T
W
T
F
S
28
91°
76°
29
93°
77°
30
93°
77°
1
92°
76°
2
88°
77°
3
88°
77°
4
89°
76°
5
90°
76°
6
91°
76°
7
92°
76°
8
91°
76°
9
90°
75°
10
92°
76°
11
93°
75°
12
92°
75°
13
92°
76°
14
91°
75°
15
90°
74°
16
90°
74°
17
91°
75°
18
89°
74°
19
90°
74°
20
90°
75°
21
91°
74°
22
90°
75°
23
90°
74°
24
91°
75°
25
93°
75°
26
93°
76°
27
92°
74°
28
93°
75°
29
92°
76°
30
91°
75°
31
93°
76°
1
93°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in San Marco
San Marco's July 2026 forecast shows daily high temperatures ranging from 88° to 93°, with overnight lows between 74° and 77°. The average high for July is 91° with an average low of 75°. 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 Marco. See also: August | September | October.