S
M
T
W
T
F
S
26
81°
58°
27
78°
56°
28
79°
57°
29
82°
58°
30
82°
59°
31
83°
56°
1
73°
55°
2
75°
56°
3
80°
57°
4
82°
57°
5
82°
56°
6
74°
55°
7
74°
56°
8
80°
57°
9
80°
56°
10
77°
56°
11
72°
55°
12
72°
55°
13
70°
54°
14
72°
56°
15
74°
55°
16
79°
55°
17
77°
54°
18
78°
55°
19
79°
56°
20
79°
55°
21
74°
55°
22
79°
52°
23
78°
43°
24
69°
42°
25
66°
41°
26
67°
42°
27
66°
41°
28
67°
47°
29
74°
52°
30
76°
50°
31
68°
44°
1
71°
47°
2
73°
48°
3
72°
49°
4
74°
49°
5
75°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rosyth
Rosyth's August 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 41° 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 Rosyth. See also: September | October | November.