S
M
T
W
T
F
S
28
99°
75°
29
97°
72°
30
91°
70°
1
91°
66°
2
90°
63°
3
91°
68°
4
91°
72°
5
93°
72°
6
91°
72°
7
93°
68°
8
99°
70°
9
93°
72°
10
90°
75°
11
91°
70°
12
91°
66°
13
90°
75°
14
95°
77°
15
86°
72°
16
90°
66°
17
90°
66°
18
93°
70°
19
90°
72°
20
86°
72°
21
86°
73°
22
86°
72°
23
76°
59°
24
78°
60°
25
72°
56°
26
75°
62°
27
81°
66°
28
77°
63°
29
79°
65°
30
80°
60°
31
82°
59°
1
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Costa
Costa's July 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 56° and 66°. The average high for July is 79° with an average low of 61°. 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 Costa. See also: August | September | October.