S
M
T
W
T
F
S
31
73°
55°
1
76°
56°
2
77°
56°
3
76°
54°
4
67°
49°
5
77°
56°
6
78°
53°
7
78°
47°
8
71°
55°
9
76°
55°
10
77°
56°
11
79°
57°
12
80°
58°
13
79°
57°
14
73°
57°
15
77°
53°
16
80°
58°
17
81°
59°
18
81°
58°
19
80°
53°
20
77°
53°
21
75°
54°
22
82°
56°
23
82°
60°
24
81°
61°
25
83°
62°
26
83°
63°
27
82°
61°
28
84°
53°
29
80°
52°
30
74°
53°
1
74°
54°
2
75°
54°
3
75°
53°
4
78°
54°
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 67° to 84°, with overnight lows between 47° and 63°. The average high for June is 78° with an average low of 56°. 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.