S
M
T
W
T
F
S
31
82°
48°
1
86°
50°
2
88°
52°
3
90°
55°
4
90°
54°
5
N/A
6
85°
49°
7
84°
51°
8
78°
54°
9
82°
53°
10
85°
53°
11
91°
56°
12
95°
56°
13
92°
55°
14
98°
60°
15
97°
62°
16
98°
58°
17
93°
60°
18
90°
57°
19
86°
51°
20
85°
50°
21
86°
51°
22
86°
51°
23
89°
54°
24
88°
52°
25
90°
56°
26
91°
56°
27
91°
56°
28
90°
56°
29
91°
55°
30
84°
50°
1
87°
56°
2
91°
57°
3
92°
58°
4
92°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Jamestown
Jamestown's June 2026 forecast shows daily high temperatures ranging from 78° to 98°, with overnight lows between 49° and 62°. The average high for June is 89° with an average low of 55°. 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.