S
M
T
W
T
F
S
26
66°
57°
27
68°
52°
28
69°
52°
29
71°
53°
30
72°
55°
31
71°
56°
1
69°
57°
2
73°
55°
3
71°
56°
4
72°
56°
5
72°
55°
6
71°
55°
7
72°
56°
8
72°
55°
9
69°
53°
10
67°
50°
11
68°
51°
12
69°
54°
13
68°
56°
14
67°
52°
15
68°
56°
16
71°
55°
17
71°
56°
18
70°
56°
19
71°
54°
20
69°
56°
21
68°
55°
22
70°
53°
23
67°
53°
24
68°
54°
25
67°
55°
26
68°
54°
27
66°
50°
28
65°
55°
29
66°
55°
30
64°
54°
31
68°
56°
1
69°
55°
2
69°
55°
3
70°
54°
4
69°
54°
5
69°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Upper Swell
Upper Swell's August 2026 forecast shows daily high temperatures ranging from 64° to 73°, with overnight lows between 50° and 57°. The average high for August is 69° with an average low of 54°. 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 Upper Swell. See also: September | October | November.