S
M
T
W
T
F
S
26
93°
72°
27
93°
71°
28
84°
69°
29
83°
65°
30
81°
61°
31
74°
63°
1
78°
63°
2
80°
61°
3
81°
60°
4
77°
64°
5
68°
61°
6
81°
61°
7
82°
64°
8
79°
59°
9
82°
62°
10
86°
69°
11
86°
66°
12
84°
72°
13
79°
69°
14
74°
67°
15
80°
70°
16
81°
62°
17
79°
59°
18
N/A
19
78°
57°
20
79°
62°
21
80°
59°
22
78°
56°
23
75°
55°
24
74°
56°
25
78°
55°
26
77°
54°
27
76°
52°
28
78°
56°
29
76°
55°
30
74°
55°
31
78°
54°
1
71°
57°
2
71°
53°
3
72°
51°
4
71°
54°
5
74°
54°
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 71° to 80°, with overnight lows between 51° and 62°. The average high for August is 76° with an average low of 55°. 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.
