S
M
T
W
T
F
S
28
76°
60°
29
72°
56°
30
72°
56°
1
73°
59°
2
73°
58°
3
74°
57°
4
74°
61°
5
73°
60°
6
72°
61°
7
74°
62°
8
74°
62°
9
75°
61°
10
75°
62°
11
76°
62°
12
75°
63°
13
74°
63°
14
76°
62°
15
75°
59°
16
75°
57°
17
76°
56°
18
74°
57°
19
76°
61°
20
76°
56°
21
80°
59°
22
79°
62°
23
78°
63°
24
82°
58°
25
80°
56°
26
76°
56°
27
77°
55°
28
76°
59°
29
76°
59°
30
77°
60°
31
80°
63°
1
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Winthrop
Winthrop's July 2026 forecast shows daily high temperatures ranging from 72° to 82°, with overnight lows between 55° and 63°. The average high for July is 76° 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 July weather will actually feel in Winthrop. See also: August | September | October.