S
M
T
W
T
F
S
28
71°
53°
29
72°
54°
30
71°
53°
1
72°
52°
2
70°
51°
3
69°
52°
4
71°
52°
5
70°
53°
6
72°
56°
7
73°
55°
8
72°
59°
9
74°
57°
10
73°
56°
11
78°
63°
12
82°
63°
13
82°
62°
14
81°
63°
15
80°
61°
16
81°
62°
17
82°
65°
18
83°
63°
19
83°
64°
20
82°
65°
21
84°
64°
22
83°
57°
23
76°
59°
24
77°
56°
25
72°
56°
26
71°
57°
27
72°
56°
28
73°
56°
29
75°
60°
30
79°
63°
31
77°
63°
1
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Casco
Casco's July 2026 forecast shows daily high temperatures ranging from 69° to 84°, with overnight lows between 51° and 65°. The average high for July is 76° with an average low of 58°. 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 Casco. See also: August | September | October.