S
M
T
W
T
F
S
31
93°
70°
1
93°
68°
2
87°
71°
3
86°
71°
4
78°
70°
5
81°
67°
6
86°
72°
7
84°
73°
8
91°
73°
9
93°
74°
10
91°
76°
11
91°
74°
12
90°
74°
13
91°
73°
14
88°
70°
15
88°
68°
16
86°
68°
17
90°
69°
18
92°
70°
19
89°
68°
20
88°
71°
21
85°
70°
22
86°
71°
23
86°
71°
24
89°
72°
25
90°
72°
26
90°
71°
27
91°
72°
28
92°
72°
29
92°
71°
30
91°
72°
1
92°
73°
2
93°
73°
3
94°
74°
4
94°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Winthrop
Winthrop's June 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 68° and 76°. The average high for June is 90° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Winthrop. See also: July | August | September.