S
M
T
W
T
F
S
26
80°
59°
27
78°
53°
28
76°
53°
29
76°
58°
30
78°
57°
31
76°
53°
1
77°
52°
2
75°
52°
3
75°
53°
4
76°
52°
5
75°
51°
6
75°
54°
7
77°
55°
8
77°
57°
9
75°
60°
10
76°
59°
11
76°
59°
12
82°
58°
13
78°
59°
14
82°
52°
15
75°
51°
16
75°
53°
17
78°
52°
18
75°
50°
19
74°
52°
20
74°
51°
21
75°
52°
22
75°
50°
23
73°
57°
24
74°
54°
25
73°
52°
26
77°
59°
27
80°
58°
28
79°
58°
29
82°
54°
30
81°
49°
31
72°
49°
1
73°
50°
2
72°
56°
3
75°
55°
4
76°
48°
5
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Machias
Machias's August 2026 forecast shows daily high temperatures ranging from 71° to 82°, with overnight lows between 48° and 60°. The average high for August is 76° 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 August weather will actually feel in Machias. See also: September | October | November.