S
M
T
W
T
F
S
26
90°
75°
27
90°
72°
28
93°
73°
29
88°
72°
30
86°
66°
31
88°
63°
1
86°
69°
2
80°
69°
3
79°
65°
4
83°
66°
5
87°
68°
6
88°
70°
7
90°
67°
8
89°
70°
9
88°
69°
10
88°
69°
11
89°
70°
12
89°
69°
13
90°
69°
14
88°
66°
15
83°
63°
16
83°
63°
17
90°
70°
18
89°
69°
19
91°
71°
20
91°
70°
21
90°
69°
22
90°
70°
23
89°
70°
24
89°
68°
25
88°
70°
26
89°
69°
27
88°
69°
28
88°
68°
29
89°
69°
30
88°
68°
31
88°
68°
1
89°
67°
2
89°
68°
3
88°
67°
4
87°
67°
5
87°
66°
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 79° to 91°, with overnight lows between 63° and 71°. The average high for August is 88° with an average low of 68°. 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.
