S
M
T
W
T
F
S
26
79°
55°
27
74°
54°
28
74°
55°
29
75°
54°
30
74°
54°
31
75°
55°
1
73°
55°
2
76°
57°
3
79°
58°
4
77°
58°
5
76°
57°
6
79°
59°
7
75°
60°
8
77°
59°
9
79°
60°
10
80°
61°
11
79°
60°
12
76°
57°
13
79°
55°
14
75°
55°
15
72°
54°
16
Hist. Avg.
79°
60°
17
Hist. Avg.
79°
60°
18
Hist. Avg.
79°
60°
19
Hist. Avg.
79°
60°
20
Hist. Avg.
78°
59°
21
Hist. Avg.
78°
59°
22
Hist. Avg.
78°
59°
23
Hist. Avg.
78°
59°
24
Hist. Avg.
78°
59°
25
Hist. Avg.
78°
58°
26
Hist. Avg.
78°
58°
27
Hist. Avg.
77°
58°
28
Hist. Avg.
77°
58°
29
Hist. Avg.
77°
58°
30
Hist. Avg.
77°
57°
31
Hist. Avg.
76°
57°
1
Hist. Avg.
76°
57°
2
Hist. Avg.
76°
57°
3
Hist. Avg.
76°
56°
4
Hist. Avg.
75°
56°
5
Hist. Avg.
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Biddeford
Biddeford's August 2026 forecast shows daily high temperatures ranging from 72° to 80°, with overnight lows between 54° and 61°. The average high for August is 76° 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 Biddeford. See also: September | October | November.