S
M
T
W
T
F
S
26
82°
50°
27
86°
50°
28
81°
60°
29
69°
64°
30
75°
62°
31
81°
60°
1
86°
63°
2
N/A
3
78°
56°
4
85°
54°
5
85°
60°
6
85°
71°
7
88°
64°
8
85°
65°
9
86°
63°
10
87°
62°
11
86°
58°
12
79°
60°
13
80°
57°
14
78°
56°
15
79°
59°
16
81°
56°
17
77°
58°
18
76°
55°
19
76°
58°
20
77°
55°
21
76°
52°
22
76°
56°
23
82°
59°
24
80°
60°
25
78°
58°
26
76°
55°
27
75°
56°
28
74°
58°
29
78°
58°
30
80°
57°
31
80°
56°
1
79°
52°
2
72°
51°
3
71°
51°
4
71°
48°
5
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Winchester
Winchester's August 2026 forecast shows daily high temperatures ranging from 71° to 88°, with overnight lows between 48° and 71°. The average high for August is 79° with an average low of 57°. 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.