S
M
T
W
T
F
S
31
90°
67°
1
82°
68°
2
83°
64°
3
86°
57°
4
85°
59°
5
87°
63°
6
88°
69°
7
85°
72°
8
82°
71°
9
83°
69°
10
86°
68°
11
87°
67°
12
87°
70°
13
90°
70°
14
90°
68°
15
89°
69°
16
87°
64°
17
83°
61°
18
87°
67°
19
89°
68°
20
92°
69°
21
90°
69°
22
88°
68°
23
87°
69°
24
90°
70°
25
90°
70°
26
91°
69°
27
90°
70°
28
84°
70°
29
84°
69°
30
85°
70°
1
86°
69°
2
85°
67°
3
85°
64°
4
86°
65°
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 57° and 72°. The average high for June is 87° with an average low of 68°. 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.