S
M
T
W
T
F
S
26
86°
59°
27
80°
56°
28
77°
58°
29
77°
60°
30
79°
59°
31
78°
58°
1
82°
59°
2
82°
60°
3
81°
59°
4
79°
63°
5
80°
66°
6
Hist. Avg.
82°
62°
7
Hist. Avg.
82°
62°
8
Hist. Avg.
81°
62°
9
Hist. Avg.
81°
62°
10
Hist. Avg.
81°
62°
11
Hist. Avg.
81°
62°
12
Hist. Avg.
81°
62°
13
Hist. Avg.
81°
62°
14
Hist. Avg.
81°
61°
15
Hist. Avg.
80°
61°
16
Hist. Avg.
80°
61°
17
Hist. Avg.
80°
61°
18
Hist. Avg.
80°
61°
19
Hist. Avg.
80°
60°
20
Hist. Avg.
80°
60°
21
Hist. Avg.
80°
60°
22
Hist. Avg.
80°
60°
23
Hist. Avg.
79°
60°
24
Hist. Avg.
79°
60°
25
Hist. Avg.
79°
59°
26
Hist. Avg.
79°
59°
27
Hist. Avg.
78°
59°
28
Hist. Avg.
78°
58°
29
Hist. Avg.
78°
58°
30
Hist. Avg.
78°
58°
31
Hist. Avg.
78°
58°
1
Hist. Avg.
77°
57°
2
Hist. Avg.
77°
57°
3
Hist. Avg.
77°
56°
4
Hist. Avg.
76°
56°
5
Hist. Avg.
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Winthrop
Winthrop's August 2026 forecast shows daily high temperatures ranging from 77° to 86°, with overnight lows between 56° and 66°. The average high for August is 80° with an average low of 60°. 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 Winthrop. See also: September | October | November.