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