S
M
T
W
T
F
S
26
81°
46°
27
83°
42°
28
81°
49°
29
76°
56°
30
71°
62°
31
75°
59°
1
80°
59°
2
75°
61°
3
71°
59°
4
83°
54°
5
80°
60°
6
79°
63°
7
81°
62°
8
79°
61°
9
79°
61°
10
80°
58°
11
74°
57°
12
72°
56°
13
71°
55°
14
73°
56°
15
72°
55°
16
75°
58°
17
73°
59°
18
72°
58°
19
77°
58°
20
76°
57°
21
74°
55°
22
74°
58°
23
77°
58°
24
75°
57°
25
74°
57°
26
76°
54°
27
73°
56°
28
70°
57°
29
70°
58°
30
75°
57°
31
76°
56°
1
75°
54°
2
68°
53°
3
68°
54°
4
70°
52°
5
71°
54°
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 68° to 83°, with overnight lows between 52° and 63°. The average high for August is 75° with an average low of 57°. 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.