S
M
T
W
T
F
S
31
90°
72°
1
92°
73°
2
87°
71°
3
86°
71°
4
83°
70°
5
85°
71°
6
82°
71°
7
83°
73°
8
88°
70°
9
91°
69°
10
88°
71°
11
90°
70°
12
88°
70°
13
90°
71°
14
89°
68°
15
90°
71°
16
89°
70°
17
85°
71°
18
85°
71°
19
86°
70°
20
88°
71°
21
89°
71°
22
89°
70°
23
88°
71°
24
90°
71°
25
88°
70°
26
87°
71°
27
87°
71°
28
89°
72°
29
90°
71°
30
91°
72°
1
91°
72°
2
90°
71°
3
92°
72°
4
92°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Jamestown
Jamestown's June 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 68° and 73°. The average high for June is 88° with an average low of 71°. 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 Jamestown. See also: July | August | September.