S
M
T
W
T
F
S
26
86°
62°
27
86°
63°
28
85°
62°
29
85°
62°
30
84°
60°
31
78°
57°
1
77°
54°
2
77°
54°
3
78°
58°
4
79°
57°
5
79°
57°
6
80°
60°
7
81°
61°
8
78°
60°
9
78°
59°
10
83°
53°
11
79°
54°
12
84°
59°
13
83°
60°
14
85°
61°
15
84°
60°
16
84°
60°
17
86°
59°
18
85°
60°
19
83°
54°
20
80°
51°
21
77°
51°
22
77°
50°
23
78°
50°
24
77°
51°
25
80°
51°
26
83°
52°
27
83°
50°
28
81°
55°
29
78°
56°
30
78°
53°
31
82°
56°
1
82°
48°
2
80°
47°
3
74°
48°
4
76°
51°
5
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Winchester
Winchester's August 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 47° and 63°. The average high for August is 81° with an average low of 56°. 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 Winchester. See also: September | October | November.
