S
M
T
W
T
F
S
26
85°
70°
27
84°
70°
28
82°
69°
29
83°
70°
30
84°
70°
31
86°
69°
1
87°
70°
2
88°
69°
3
85°
69°
4
84°
65°
5
85°
69°
6
87°
65°
7
88°
64°
8
85°
65°
9
85°
64°
10
86°
65°
11
90°
68°
12
90°
69°
13
89°
69°
14
90°
68°
15
90°
69°
16
86°
69°
17
86°
68°
18
87°
68°
19
85°
65°
20
85°
65°
21
87°
66°
22
85°
66°
23
86°
67°
24
87°
64°
25
85°
68°
26
88°
69°
27
89°
68°
28
87°
67°
29
88°
68°
30
88°
67°
31
87°
62°
1
83°
61°
2
83°
61°
3
85°
62°
4
88°
65°
5
87°
65°
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 82° to 90°, with overnight lows between 61° and 70°. The average high for August is 86° with an average low of 67°. 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.
