S
M
T
W
T
F
S
31
73°
60°
1
76°
58°
2
87°
57°
3
79°
58°
4
79°
54°
5
79°
54°
6
90°
53°
7
91°
67°
8
76°
61°
9
92°
60°
10
76°
52°
11
68°
53°
12
76°
48°
13
67°
47°
14
72°
49°
15
72°
50°
16
72°
51°
17
81°
56°
18
80°
55°
19
74°
54°
20
75°
53°
21
73°
54°
22
75°
54°
23
86°
64°
24
79°
61°
25
74°
60°
26
73°
57°
27
75°
61°
28
78°
61°
29
78°
60°
30
74°
60°
1
74°
56°
2
77°
62°
3
84°
63°
4
83°
63°
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 86°, with overnight lows between 47° and 64°. The average high for June is 76° 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.