S
M
T
W
T
F
S
26
79°
59°
27
79°
59°
28
74°
59°
29
76°
55°
30
77°
59°
31
78°
58°
1
78°
51°
2
78°
52°
3
76°
51°
4
73°
51°
5
74°
52°
6
73°
51°
7
74°
57°
8
80°
54°
9
77°
57°
10
80°
58°
11
74°
56°
12
81°
57°
13
81°
58°
14
73°
57°
15
81°
49°
16
74°
53°
17
77°
48°
18
73°
49°
19
72°
48°
20
72°
49°
21
74°
53°
22
73°
53°
23
72°
49°
24
76°
55°
25
78°
49°
26
77°
49°
27
73°
50°
28
70°
46°
29
70°
48°
30
71°
48°
31
68°
46°
1
70°
46°
2
69°
44°
3
69°
52°
4
71°
49°
5
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Maine
Maine's August 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 44° and 59°. The average high for August is 75° with an average low of 52°. 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 Maine. See also: September | October | November.