S
M
T
W
T
F
S
26
85°
65°
27
84°
65°
28
85°
66°
29
87°
65°
30
86°
65°
31
85°
63°
1
84°
64°
2
84°
64°
3
85°
66°
4
90°
69°
5
86°
67°
6
85°
67°
7
84°
65°
8
85°
69°
9
88°
68°
10
87°
66°
11
88°
65°
12
87°
68°
13
86°
66°
14
86°
64°
15
85°
69°
16
Hist. Avg.
87°
65°
17
Hist. Avg.
87°
65°
18
Hist. Avg.
87°
65°
19
Hist. Avg.
87°
65°
20
Hist. Avg.
87°
64°
21
Hist. Avg.
87°
64°
22
Hist. Avg.
87°
64°
23
Hist. Avg.
87°
64°
24
Hist. Avg.
87°
64°
25
Hist. Avg.
87°
64°
26
Hist. Avg.
86°
64°
27
Hist. Avg.
86°
63°
28
Hist. Avg.
86°
63°
29
Hist. Avg.
86°
63°
30
Hist. Avg.
86°
63°
31
Hist. Avg.
86°
63°
1
Hist. Avg.
86°
62°
2
Hist. Avg.
85°
62°
3
Hist. Avg.
85°
62°
4
Hist. Avg.
85°
62°
5
Hist. Avg.
85°
62°
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 84° to 90°, with overnight lows between 63° and 69°. The average high for August is 86° with an average low of 66°. 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.