S
M
T
W
T
F
S
31
66°
41°
1
67°
45°
2
69°
50°
3
74°
46°
4
77°
48°
5
83°
64°
6
75°
59°
7
77°
54°
8
82°
62°
9
84°
66°
10
80°
64°
11
83°
64°
12
84°
67°
13
83°
65°
14
79°
62°
15
77°
61°
16
75°
57°
17
73°
57°
18
74°
54°
19
76°
58°
20
74°
59°
21
80°
51°
22
71°
51°
23
72°
54°
24
75°
61°
25
80°
61°
26
79°
55°
27
73°
52°
28
74°
56°
29
74°
58°
30
75°
56°
1
76°
57°
2
75°
56°
3
78°
59°
4
80°
60°
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 71° to 84°, with overnight lows between 51° and 67°. The average high for June is 77° with an average low of 59°. 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.