S
M
T
W
T
F
S
26
75°
57°
27
79°
58°
28
74°
55°
29
74°
53°
30
78°
58°
31
79°
57°
1
78°
50°
2
74°
49°
3
72°
50°
4
72°
50°
5
73°
49°
6
72°
50°
7
73°
49°
8
74°
53°
9
77°
56°
10
78°
56°
11
76°
55°
12
78°
56°
13
73°
56°
14
78°
55°
15
79°
48°
16
72°
52°
17
76°
47°
18
72°
47°
19
71°
46°
20
70°
48°
21
71°
50°
22
71°
49°
23
69°
48°
24
72°
54°
25
70°
49°
26
76°
55°
27
76°
53°
28
75°
51°
29
70°
53°
30
68°
48°
31
68°
46°
1
69°
44°
2
68°
45°
3
68°
51°
4
69°
47°
5
69°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Topsham
Topsham's August 2026 forecast shows daily high temperatures ranging from 68° to 79°, with overnight lows between 44° and 58°. The average high for August is 73° with an average low of 51°. 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 Topsham. See also: September | October | November.
