S
M
T
W
T
F
S
26
74°
49°
27
80°
49°
28
75°
57°
29
71°
62°
30
78°
63°
31
80°
64°
1
82°
61°
2
81°
65°
3
74°
64°
4
86°
61°
5
83°
58°
6
87°
67°
7
90°
71°
8
80°
69°
9
92°
66°
10
81°
65°
11
86°
63°
12
80°
63°
13
79°
63°
14
79°
60°
15
79°
57°
16
77°
60°
17
78°
61°
18
75°
59°
19
76°
59°
20
75°
60°
21
78°
63°
22
77°
59°
23
76°
58°
24
73°
60°
25
74°
59°
26
77°
62°
27
80°
63°
28
80°
59°
29
73°
57°
30
71°
54°
31
70°
53°
1
70°
53°
2
71°
54°
3
71°
58°
4
72°
60°
5
71°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Falmouth
Falmouth's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 53° and 65°. The average high for August is 76° with an average low of 59°. 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 Falmouth. See also: September | October | November.