S
M
T
W
T
F
S
26
78°
48°
27
82°
47°
28
80°
56°
29
73°
63°
30
75°
64°
31
82°
64°
1
85°
57°
2
77°
64°
3
72°
62°
4
87°
64°
5
88°
65°
6
91°
68°
7
91°
73°
8
86°
74°
9
86°
62°
10
85°
59°
11
83°
59°
12
77°
54°
13
74°
55°
14
75°
55°
15
73°
56°
16
76°
55°
17
74°
54°
18
73°
57°
19
74°
55°
20
74°
55°
21
73°
53°
22
73°
57°
23
79°
58°
24
77°
58°
25
72°
57°
26
75°
54°
27
71°
53°
28
71°
57°
29
72°
57°
30
78°
56°
31
77°
55°
1
76°
51°
2
69°
52°
3
69°
52°
4
70°
49°
5
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lisbon Falls
Lisbon Falls's August 2026 forecast shows daily high temperatures ranging from 69° to 91°, with overnight lows between 49° and 74°. The average high for August is 77° 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 Lisbon Falls. See also: September | October | November.