S
M
T
W
T
F
S
26
72°
60°
27
77°
59°
28
85°
65°
29
69°
65°
30
73°
63°
31
75°
66°
1
85°
69°
2
86°
71°
3
80°
71°
4
87°
66°
5
88°
67°
6
86°
73°
7
94°
76°
8
92°
74°
9
90°
74°
10
85°
71°
11
89°
74°
12
84°
70°
13
86°
70°
14
84°
69°
15
76°
66°
16
81°
62°
17
72°
67°
18
77°
63°
19
83°
67°
20
80°
65°
21
76°
64°
22
76°
63°
23
77°
64°
24
76°
63°
25
77°
62°
26
80°
65°
27
77°
64°
28
76°
62°
29
76°
61°
30
75°
63°
31
73°
60°
1
73°
61°
2
74°
60°
3
73°
63°
4
73°
66°
5
77°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Winthrop
Winthrop's August 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 60° and 67°. The average high for August is 76° with an average low of 63°. 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.
