S
M
T
W
T
F
S
26
66°
55°
27
66°
54°
28
77°
63°
29
72°
61°
30
68°
52°
31
66°
50°
1
64°
52°
2
70°
50°
3
77°
55°
4
75°
59°
5
64°
54°
6
59°
50°
7
66°
50°
8
77°
48°
9
72°
55°
10
68°
50°
11
79°
50°
12
86°
54°
13
91°
63°
14
77°
55°
15
66°
52°
16
64°
52°
17
N/A
18
68°
56°
19
69°
55°
20
61°
51°
21
63°
48°
22
65°
47°
23
67°
51°
24
67°
51°
25
68°
53°
26
67°
52°
27
66°
51°
28
67°
53°
29
65°
52°
30
68°
54°
31
65°
54°
1
64°
52°
2
64°
55°
3
68°
53°
4
64°
50°
5
67°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Great Preston
Great Preston's August 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 47° and 56°. The average high for August is 66° 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 Great Preston. See also: September | October | November.
