S
M
T
W
T
F
S
28
72°
50°
29
70°
51°
30
71°
52°
1
71°
55°
2
74°
54°
3
75°
53°
4
76°
54°
5
75°
54°
6
74°
57°
7
76°
58°
8
76°
61°
9
Hist. Avg.
74°
56°
10
Hist. Avg.
74°
56°
11
Hist. Avg.
74°
56°
12
Hist. Avg.
74°
56°
13
Hist. Avg.
74°
56°
14
Hist. Avg.
74°
56°
15
Hist. Avg.
74°
56°
16
Hist. Avg.
74°
56°
17
Hist. Avg.
75°
56°
18
Hist. Avg.
75°
57°
19
Hist. Avg.
75°
57°
20
Hist. Avg.
75°
57°
21
Hist. Avg.
75°
57°
22
Hist. Avg.
75°
57°
23
Hist. Avg.
75°
57°
24
Hist. Avg.
75°
57°
25
Hist. Avg.
75°
57°
26
Hist. Avg.
75°
57°
27
Hist. Avg.
75°
57°
28
Hist. Avg.
75°
57°
29
Hist. Avg.
75°
57°
30
Hist. Avg.
75°
57°
31
Hist. Avg.
75°
57°
1
Hist. Avg.
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Islesboro
Islesboro's July 2026 forecast shows daily high temperatures ranging from 70° to 76°, with overnight lows between 50° and 61°. The average high for July is 74° with an average low of 54°. 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 Islesboro. See also: August | September | October.
